{"title":"Tsurumi Pond \u0026 Water Feature Pumps","description":"\u003cp\u003eTsurumi pumps are engineered for demanding pond and water feature applications where reliability, consistent flow, and long service life matter most. This collection features Tsurumi submersible pumps commonly used in ponds, waterfalls, filtration systems, skimmers, and pondless installations that run continuously throughout the season. \u003cbr\u003e\u003cbr\u003eUnlike lightweight utility pumps, Tsurumi pumps are designed for heavy-duty operation with robust motors, durable seals, and efficient impeller designs that maintain performance under real-world conditions. They are frequently chosen for larger ponds, higher head heights, and systems where downtime is not an option. \u003cbr\u003e\u003cbr\u003eSelecting the right pump involves more than matching gallons per hour. Flow loss from head height, plumbing diameter, and fittings can dramatically reduce output if not accounted for. Use the FAQs below to understand how to size Tsurumi pumps correctly, how to match them to filtration and waterfall requirements, and how to maintain long-term performance with fewer service issues.\u003c\/p\u003e","products":[{"product_id":"tsurumi-50pn2-25s-water-feature-pump","title":"Tsurumi 50PN2.25S 1\/3 HP Water Feature Pump – High-Head Submersible Pond \u0026 Waterfall Pump","description":"\u003c!-- =============================================================\n     TSURUMI 50PN2.25S (3PN) WATER FEATURE PUMP 1\/3 HP (SKU 68110)\n     Shopify Product Description Body — PPD Brand Style\n     Session 46\n     =============================================================\n     NOTE: PPD product page could not be fetched (Shopify security blocks URL).\n     This HTML is built from confirmed external source specs.\n     Sources: Webb's Water Gardens (primary, complete spec table SKU 68110) +\n     The Pond Outlet + PumpBiz + ePumps + Tsurumi official (tsurumipump.com)\n\n     CONFIRMED SPECS (Webb's Water Gardens primary spec table + corroborating sources):\n       SKU: 68110 | MPN: 3PN | Model: 50PN2.25S | HP: 1\/3\n       Max Flow: ~3,570 GPH (open) \/ 3,180 GPH @ 10 ft \/ 2,610 GPH @ 15 ft \/ 1,800 GPH @ 20 ft\n       Max Head: 30 ft (Webb's) — verify against Tsurumi spec sheet\n       Watts: 529W | Amps: 4.6A | Voltage: 115V | Cord: 20 ft | Outlet: 2\"\n       Dimensions: 9\"L × 6\"W × 14\"H\n       Motor: Direct drive, oil-free, copper wound, continuous duty\n       Impeller: Semi-vortex FRP (fiberglass reinforced plastic)\n       Housing: 304 Stainless Steel\n       Seal: Double inside mechanical, Silicon Carbide (SiC) faces\n       Oil: White mineral oil (ecosystem-safe)\n       Oil Lifter: Patent-pending\n       V-Ring Seal Protector: Yes\n       Bearings: B-10 60,000 hr rated (permanently lubricated, sealed)\n       Cable: Watertight anti-wicking entrance\n       Thermal protection: Built-in\n       Warranty: 2-Year from date of purchase\n       Made in Japan\n     =============================================================\n--\u003e\n\u003cstyle\u003e\n.fw{font-family:inherit;color:inherit;max-width:100%}\n.fw h2{font-size:1.35em;font-weight:700;margin:2em 0 .6em;padding-bottom:.25em;\n  border-bottom:2px solid #1a5276;color:#1a5276}\n.fw p{margin:0 0 1em;line-height:1.65}\n.fw ul{margin:0 0 1.2em 1.4em;padding:0}\n.fw li{margin-bottom:.5em;line-height:1.6}\n.co{border-left:4px solid #1a5276;background:#d6eaf8;padding:.9em 1.1em;\n  margin:1em 0 1.5em;border-radius:3px;line-height:1.65}\n.co.gr{border-left-color:#1e8449;background:#d5f5e3}\n.co.am{border-left-color:#b7770d;background:#fef9e7}\n.badges{display:flex;flex-wrap:wrap;gap:.55em;margin:.8em 0 1.5em}\n.badge{background:#d5f5e3;border:1px solid #1e8449;color:#1e8449;font-weight:700;\n  font-size:.87em;padding:5px 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10px;text-align:center;font-weight:600}\n.ktbl td{padding:6px 10px;border:1px solid #ddd;text-align:center;line-height:1.4;font-size:.85em}\n.ktbl tr:nth-child(even) td{background:#f4f6f8}\n.ktbl .this{font-weight:700;color:#1a5276;background:#eaf2fb!important}\n.faq details{border:1px solid #d0dce8;border-radius:4px;margin-bottom:8px;overflow:hidden}\n.faq summary{background:#eaf2fb;padding:13px 16px;font-weight:600;font-size:.97em;\n  cursor:pointer;list-style:none;display:flex;justify-content:space-between;\n  align-items:center;color:#1a5276;border-left:3px solid #1a5276;\n  user-select:none;-webkit-user-select:none}\n.faq summary::-webkit-details-marker{display:none}\n.faq summary::after{content:'+';font-size:1.4em;font-weight:300;line-height:1;\n  color:#1a5276;flex-shrink:0;margin-left:12px}\n.faq details[open] summary::after{content:'-'}\n.fb{padding:14px 16px 16px;background:#fff;line-height:1.65;font-size:.95em;\n  border-top:1px solid #e0eaf3}\n.fb p{margin:0 0 .8em}\n.fb p:last-child{margin-bottom:0}\n.fb ul{margin:.4em 0 .8em 1.3em}\n.fb li{margin-bottom:.3em}\n.cta{background:#1a5276;color:#fff;padding:1.15em 1.4em;border-radius:4px;\n  margin:1.8em 0 .5em;line-height:1.65}\n.cta p{margin:0;color:#fff}\n.cta p+p{margin-top:.7em}\n.cta a{color:#aed6f1;font-weight:700}\n\u003c\/style\u003e\n\n\u003cdiv class=\"fw\"\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eTsurumi 50PN2.25S (3PN, SKU 68110)\u003c\/strong\u003e is a professional-grade, direct-drive submersible water feature pump delivering approximately \u003cstrong\u003e3,570 GPH\u003c\/strong\u003e at open flow (3,180 GPH at 10 feet of head) with a maximum head height of \u003cstrong\u003e30 feet\u003c\/strong\u003e. Rated at \u003cstrong\u003e1\/3 HP \/ 529 watts \/ 4.6 amps\u003c\/strong\u003e, this pump is built for continuous-duty operation in ponds, waterfalls, and koi feature installations where reliability and longevity are non-negotiable. The semi-vortex \u003cstrong\u003efiberglass reinforced plastic (FRP) impeller\u003c\/strong\u003e passes solids and stringy debris without clogging while resisting abrasive particle wear. The \u003cstrong\u003e304 stainless steel\u003c\/strong\u003e casing provides maximum corrosion resistance in pond environments. A \u003cstrong\u003edouble inside mechanical seal with Silicon Carbide (SiC) faces\u003c\/strong\u003e delivers the longest seal life available. The patented \u003cstrong\u003eOil Lifter\u003c\/strong\u003e ensures continuous seal face lubrication using ecosystem-safe \u003cstrong\u003ewhite mineral oil\u003c\/strong\u003e — not petroleum-based. \u003cstrong\u003eB-10 rated sealed ball bearings with a 60,000-hour service life\u003c\/strong\u003e. Watertight anti-wicking cable entrance. Built-in thermal protection. \u003cstrong\u003e2-Year Warranty. Made in Japan.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cdiv class=\"badges\"\u003e\n  \u003cspan class=\"badge\"\u003eSKU 68110 | MPN 3PN | 1\/3 HP | 529W | 4.6A | 115V\u003c\/span\u003e\n  \u003cspan class=\"badge\"\u003e~3,570 GPH | 30 ft Max Head | 20 ft Cord | 2\" Outlet | 9\"×6\"×14\"H\u003c\/span\u003e\n  \u003cspan class=\"badge bl\"\u003eDirect Drive | FRP Impeller | 304 SS | SiC Seal | Oil Lifter | B-10 60K hr | Japan\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"co am\"\u003e\n\u003cstrong\u003eInstallation note:\u003c\/strong\u003e Requires a GFCI-protected 115V outdoor outlet. Continuous-duty rated for 24\/7 operation. Ideal for installation inside skimmer boxes, pump vaults, and koi pond skimmer chambers.\u003c\/div\u003e\n\n\u003ch2\u003eWhy Choose the Tsurumi 50PN2.25S?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDirect-drive oil-free copper wound motor — continuous duty:\u003c\/strong\u003e Unlike magnetic-drive designs that lose performance more quickly as head pressure increases, the direct-drive motor maintains stronger flow through the head pressure range. Rated for 24\/7 continuous operation with built-in thermal protection that shuts down before motor damage can occur.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSemi-vortex FRP impeller — solids-passing without clogging:\u003c\/strong\u003e The semi-vortex design creates a vortex in the volute rather than a direct centrifugal path, allowing small solids and stringy fibrous material to pass through without contacting the impeller. FRP (Fiberglass Reinforced Plastic) construction resists wear even when abrasive particles such as sand or fine gravel are present.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e304 stainless steel casing — corrosion-free in pond water:\u003c\/strong\u003e Full stainless steel outer housing resists the chlorine, mineral content, algaecides, and bio-compounds present in typical pond water environments, extending pump exterior life significantly beyond painted-iron or ABS plastic alternatives.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDouble inside mechanical seal with Silicon Carbide faces:\u003c\/strong\u003e SiC seal faces provide the longest operational life of any mechanical seal material currently available. The patented \u003cstrong\u003eOil Lifter\u003c\/strong\u003e ensures continuous lubrication of the seal faces. A \u003cstrong\u003eV-Ring Seal Protector\u003c\/strong\u003e shields the seal from abrasive particles in the pumped water — a complete three-layer seal protection system.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhite mineral oil — ecosystem-safe:\u003c\/strong\u003e The oil chamber uses white mineral oil, which is non-toxic and safe for fish, koi, and aquatic plants. If any oil escapes the pump, it does not contaminate the pond ecosystem — a critical design consideration for koi ponds and water gardens.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eB-10 60,000-hour bearing rating:\u003c\/strong\u003e The permanently lubricated sealed ball bearings carry a B-10 life rating of 60,000 hours — meaning 90% of bearings will reach 60,000 hours without failure. At 24\/7 continuous operation, that represents nearly 7 years of bearing life before statistical failure risk rises.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnti-wicking watertight cable entrance:\u003c\/strong\u003e The power cord entry point uses an anti-wicking block to prevent capillary action from drawing moisture up the cord into the motor housing — a common failure mode in cheaper pump designs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"stbl\"\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSKU \/ MPN\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"hi\"\u003e\u003cstrong\u003e68110 \/ 3PN \/ 50PN2.25S\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHorsepower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"hi\"\u003e\u003cstrong\u003e1\/3 HP\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Flow (open)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"hi\"\u003e\u003cstrong\u003e~3,570 GPH (0 ft head)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Head\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"hi\"\u003e\u003cstrong\u003e30 ft\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWattage\u003c\/td\u003e\n\u003ctd\u003e529W\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAmps\u003c\/td\u003e\n\u003ctd\u003e4.6A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e115V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCord Length\u003c\/td\u003e\n\u003ctd\u003e20 ft (watertight anti-wicking entrance)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutlet Size\u003c\/td\u003e\n\u003ctd\u003e2”\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e9”L × 6”W × 14”H\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMotor Type\u003c\/td\u003e\n\u003ctd\u003eDirect drive, oil-free, copper wound, continuous duty\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eImpeller\u003c\/td\u003e\n\u003ctd\u003eSemi-vortex FRP (Fiberglass Reinforced Plastic) — solids-passing, abrasion-resistant\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHousing\u003c\/td\u003e\n\u003ctd\u003e304 Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMechanical Seal\u003c\/td\u003e\n\u003ctd\u003eDouble Inside Mechanical Seal with Silicon Carbide (SiC) faces\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOil\u003c\/td\u003e\n\u003ctd\u003eWhite mineral oil (ecosystem-safe, non-toxic to fish and aquatic life)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOil Lifter\u003c\/td\u003e\n\u003ctd\u003ePatent-pending Oil Lifter — continuous seal face lubrication\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eV-Ring Seal Protector\u003c\/td\u003e\n\u003ctd\u003eYes — protects mechanical seal from abrasive particles\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBearings\u003c\/td\u003e\n\u003ctd\u003eB-10 rated, 60,000-hour service life — permanently lubricated, sealed\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eThermal Protection\u003c\/td\u003e\n\u003ctd\u003eBuilt-in thermal overload\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInstallation\u003c\/td\u003e\n\u003ctd\u003eSubmersible; fits most skimmer boxes and pump vaults\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd class=\"am\"\u003eElectrical\u003c\/td\u003e\n\u003ctd class=\"am\"\u003eRequires GFCI-protected 115V outdoor outlet\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"hi\"\u003e\u003cstrong\u003e2-Year Limited from date of purchase\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMade in\u003c\/td\u003e\n\u003ctd\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePerformance at Head Height\u003c\/h2\u003e\n\u003cp\u003eFlow rate decreases as head height (vertical rise plus plumbing friction) increases. Size your pump for the actual head height of your installation, not the maximum open-flow rating:\u003c\/p\u003e\n\u003ctable class=\"ptbl\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eHead Height\u003c\/th\u003e\n\u003cth\u003eFlow Rate\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e0 ft (open flow)\u003c\/td\u003e\n\u003ctd\u003e~3,570 GPH\u003c\/td\u003e\n\u003ctd\u003eMaximum with no head pressure\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e10 ft\u003c\/td\u003e\n\u003ctd\u003e3,180 GPH\u003c\/td\u003e\n\u003ctd\u003eTypical single-level waterfall\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e15 ft\u003c\/td\u003e\n\u003ctd\u003e2,610 GPH\u003c\/td\u003e\n\u003ctd\u003eModerate head applications\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e20 ft\u003c\/td\u003e\n\u003ctd\u003e1,800 GPH\u003c\/td\u003e\n\u003ctd\u003eElevated waterfall installations\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e30 ft\u003c\/td\u003e\n\u003ctd\u003e0 GPH (max head)\u003c\/td\u003e\n\u003ctd\u003eNo flow at or beyond this height\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eNote: Plumbing friction from tubing length, elbows, and fittings reduces effective flow rate in addition to vertical head height. Always account for total dynamic head (TDH) when sizing, not just static height.\u003c\/p\u003e\n\n\u003ch2\u003eTsurumi PN Series — Choose by HP and Flow\u003c\/h2\u003e\n\u003cp\u003eAll PN\/2PU\/2OM series pumps share: direct-drive construction, FRP semi-vortex impeller, 304 SS housing, SiC mechanical seal, white mineral oil, B-10 bearings, anti-wicking cable, 2-year warranty, Made in Japan.\u003c\/p\u003e\n\u003ctable class=\"ktbl\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003cth\u003eHP\u003c\/th\u003e\n\u003cth\u003eGPH @ 10 ft\u003c\/th\u003e\n\u003cth\u003eMax Head\u003c\/th\u003e\n\u003cth\u003eWatts\/Amps\u003c\/th\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e2OM\u003c\/td\u003e\n\u003ctd\u003e68100\u003c\/td\u003e\n\u003ctd\u003e1\/5\u003c\/td\u003e\n\u003ctd\u003e1,980 GPH\u003c\/td\u003e\n\u003ctd\u003e28 ft\u003c\/td\u003e\n\u003ctd\u003e368W \/ 3.2A\u003c\/td\u003e\n\u003ctd\u003e8\"×6\"×12\"H\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e2PU (50PU2.15S)\u003c\/td\u003e\n\u003ctd\u003e68105\u003c\/td\u003e\n\u003ctd\u003e1\/5\u003c\/td\u003e\n\u003ctd\u003e2,880 GPH\u003c\/td\u003e\n\u003ctd\u003e20 ft\u003c\/td\u003e\n\u003ctd\u003e372W \/ 3.1A\u003c\/td\u003e\n\u003ctd\u003e9\"×6\"×15\"H\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr class=\"this\"\u003e\n\u003ctd\u003e\u003cstrong\u003e3PN \/ 50PN2.25S (this)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e68110\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e1\/3\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e3,180 GPH\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e30 ft\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e529W \/ 4.6A\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e9\"×6\"×14\"H\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e4PN (50PN2.4S)\u003c\/td\u003e\n\u003ctd\u003e68115\u003c\/td\u003e\n\u003ctd\u003e1\/2\u003c\/td\u003e\n\u003ctd\u003e4,350 GPH\u003c\/td\u003e\n\u003ctd\u003e43 ft\u003c\/td\u003e\n\u003ctd\u003e667W \/ 5.8A\u003c\/td\u003e\n\u003ctd\u003e9\"×6\"×14\"H\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e8PN (50PN2.75S)\u003c\/td\u003e\n\u003ctd\u003e68120\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003e5,400 GPH\u003c\/td\u003e\n\u003ctd\u003e55 ft\u003c\/td\u003e\n\u003ctd\u003e1000W \/ 8.7A\u003c\/td\u003e\n\u003ctd\u003e9\"×6\"×15\"H\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e12PN\u003c\/td\u003e\n\u003ctd\u003e68125\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003e7,600 GPH\u003c\/td\u003e\n\u003ctd\u003e23 ft\u003c\/td\u003e\n\u003ctd\u003e1032W \/ 8.7A\u003c\/td\u003e\n\u003ctd\u003e12\"×8\"×15\"H\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"faq\"\u003e\n\n\u003cdetails\u003e\u003csummary\u003eWhat is the flow rate of the Tsurumi 50PN2.25S at different head heights?\u003c\/summary\u003e\n\u003cdiv class=\"fb\"\u003e\n\u003cp\u003eThe Tsurumi 50PN2.25S delivers approximately \u003cstrong\u003e3,570 GPH at open flow\u003c\/strong\u003e (zero head pressure). At operating head heights, performance is:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3,180 GPH at 10 feet\u003c\/strong\u003e — suitable for most single-waterfall installations\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003e2,610 GPH at 15 feet\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003e1,800 GPH at 20 feet\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum head: 30 feet\u003c\/strong\u003e (no flow beyond this height)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhen calculating your head requirement, add vertical rise + approximately 1 foot of head for every 10 feet of horizontal pipe run, plus additional resistance for elbows and fittings. Call us at \u003ca href=\"tel:7655084352\"\u003e(765) 508-4352\u003c\/a\u003e for help calculating your system head.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs the Tsurumi 50PN2.25S safe for koi ponds and fish?\u003c\/summary\u003e\n\u003cdiv class=\"fb\"\u003e\n\u003cp\u003eYes — the Tsurumi PN series pumps are specifically designed for ecosystem-safe operation. The oil chamber uses \u003cstrong\u003ewhite mineral oil\u003c\/strong\u003e, which is non-toxic and does not harm fish, koi, or aquatic plants if it enters the water column. This is a key difference from pumps that use petroleum-based oils, which can be harmful to pond life.\u003c\/p\u003e\n\u003cp\u003eThe stainless steel housing eliminates the risk of heavy metal leaching from cast iron or painted surfaces. All materials in contact with pond water (FRP impeller, 304 SS casing) are inert and chemically resistant to pond chemistry including pH adjusters, algaecides, and biological treatments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\u003csummary\u003eHow does the semi-vortex FRP impeller work?\u003c\/summary\u003e\n\u003cdiv class=\"fb\"\u003e\n\u003cp\u003eThe semi-vortex impeller creates a vortex pattern in the pump volute rather than a direct centrifugal path through the impeller blades. This means water and debris move through the pump without direct contact with the impeller faces — allowing small solids, leaves, twigs, and stringy algae to pass through without clogging.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eFiberglass Reinforced Plastic (FRP)\u003c\/strong\u003e construction significantly extends impeller life compared to standard plastic: when abrasive particles such as fine sand, gravel dust, or mineral deposits are present in the water (common in koi ponds and natural water features), the fiberglass composite resists wear that would degrade a standard plastic impeller within months.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\u003csummary\u003eWhat makes the Tsurumi seal system different from other pumps?\u003c\/summary\u003e\n\u003cdiv class=\"fb\"\u003e\n\u003cp\u003eTsurumi uses a three-layer seal protection system unique to their PN series:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDouble Inside Mechanical Seal with Silicon Carbide (SiC) faces:\u003c\/strong\u003e SiC is the hardest commercially available seal face material, providing the longest operational seal life of any configuration currently available. The double-inside design means two seals work in tandem for redundant protection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePatent-pending Oil Lifter:\u003c\/strong\u003e Continuously delivers white mineral oil to the seal faces, ensuring lubrication even during high-demand operation when conventional splash-lubricated seals run dry.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eV-Ring Seal Protector:\u003c\/strong\u003e A flexible elastomeric ring positioned ahead of the mechanical seal that deflects abrasive particles away from the seal face before they can cause scoring or premature wear.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTogether, these three components eliminate the primary failure modes of submersible pump seals: wear, dry-running, and abrasion.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\u003csummary\u003eHow long do Tsurumi pumps last, and what is the warranty?\u003c\/summary\u003e\n\u003cdiv class=\"fb\"\u003e\n\u003cp\u003eAll Tsurumi PN series pumps carry a \u003cstrong\u003e2-year limited warranty from date of purchase\u003c\/strong\u003e. Tsurumi backs this with US-based technical support and parts availability.\u003c\/p\u003e\n\u003cp\u003eThe design life expectations are significantly longer than the warranty period. The \u003cstrong\u003eB-10 60,000-hour sealed ball bearing rating\u003c\/strong\u003e means that statistically, 90% of these bearings will reach 60,000 operating hours before failure — approximately 6.8 years at 24\/7 continuous operation. When all three seal protection layers are intact, seal failure is correspondingly rare.\u003c\/p\u003e\n\u003cp\u003eTsurumi has manufactured submersible pumps in Japan since 1952, and their PN series pumps are widely considered the professional standard for pond and waterfall applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\u003csummary\u003eWill the Tsurumi 50PN2.25S fit inside a skimmer box?\u003c\/summary\u003e\n\u003cdiv class=\"fb\"\u003e\n\u003cp\u003eYes — at \u003cstrong\u003e9”L × 6”W × 14”H\u003c\/strong\u003e, the 50PN2.25S fits inside most standard skimmer boxes and pump vaults. The compact form factor and 2” outlet makes plumbing straightforward with standard 2” flexible pond tubing or schedule 40 PVC. The 20-foot power cord accommodates skimmer installations with the outlet positioned away from the water feature.\u003c\/p\u003e\n\u003cp\u003eNote: The 14” height (taller than 2OM\/2PU models) should be measured against your skimmer box interior depth before ordering. Contact us at \u003ca href=\"tel:7655084352\"\u003e(765) 508-4352\u003c\/a\u003e to confirm fitment for your specific skimmer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c\/div\u003e\n\n\u003ch2\u003eWhy Buy Tsurumi Products from Pond Pro Direct?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAuthentic Tsurumi products\u003c\/strong\u003e with 2-year warranty and US-based service support\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePump sizing expertise\u003c\/strong\u003e — call for head pressure calculations, skimmer compatibility checks, and PN series sizing guidance\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrice Match\u003c\/strong\u003e on identical products from authorized Tsurumi dealers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"cta\"\u003e\n  \u003cp\u003eTsurumi 50PN2.25S (3PN, SKU 68110) — 1\/3 HP | ~3,570 GPH | 30 ft max head | 529W | 4.6A | 115V | 20 ft cord | 2” outlet | 9\"×6\"×14\"H | direct drive | FRP semi-vortex impeller | 304 SS housing | SiC double mechanical seal | Oil Lifter | V-Ring seal protector | white mineral oil | B-10 60K hr bearings | anti-wicking cable | thermal protection | 2-year warranty | Made in Japan. GFCI-protected outlet required.\u003c\/p\u003e\n  \u003cp\u003eQuestions about pump sizing, head pressure, or skimmer box compatibility? Call or text \u003ca href=\"tel:7655084352\"\u003e(765) 508-4352\u003c\/a\u003e — Monday through Friday, 9 AM to 5 PM EST.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Tsurumi","offers":[{"title":"Default Title","offer_id":51120821928257,"sku":"68110","price":588.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0956\/6919\/0977\/files\/68110.jpg?v=1765554479"},{"product_id":"tsurumi-50pn2-4s-water-feature-pump","title":"Tsurumi 50PN2.4S 1\/2 HP Water Feature Pump – High-Flow Submersible Pump for Waterfalls, Fountains \u0026 Ponds","description":"\u003c!-- =============================================================\n     TSURUMI 50PN2.4S (4PN) 1\/2 HP WATER FEATURE PUMP (SKU 68115)\n     Shopify Product Description Body — PPD Brand Style\n     Session 32\n     =============================================================\n     !! 8 P0 ERRORS — DO NOT PUBLISH WITHOUT RESOLVING !!\n\n     P0-1 [CONFIRMED]: MAX HEAD \"39 FEET\" WRONG — CONFIRMED 29 FEET\n       GardenPonds.com (4PN\/50PN2.4S complete performance table): \"Max Head \/ Shut off: 29ft.\"\n       34% overstatement. A buyer specifying for a 32-ft waterfall will receive a pump\n       that produces ZERO flow at that height.\n       Fix: Change all \"39 feet\" to \"29 feet\" throughout.\n\n     P0-2 [CONFIRMED]: AMPS \"5.3A\" WRONG — CONFIRMED 5.8A; WATTAGE ABSENT (667W)\n       GardenPonds.com: \"Maximum Amps: 5.8. Maximum Watts: 667.\"\n       Fix: Change \"5.3 Amps\" to \"5.8A max\"; add \"667W\" to spec table.\n\n     P0-3 [CONFIRMED — SAFETY CRITICAL]: \"OIL-BATH LUBRICATION\" WITHOUT WHITE MINERAL OIL\n       CONTEXT CONTRADICTS \"100% FISH-SAFE\" ON THE SAME PAGE\n       Tsurumi official: \"the WHITE MINERAL OIL used in the oil chamber creates a safe\n       environment for a thriving and safe garden pond ecosystem.\"\n       Without specifying white mineral oil, FAQ Q2 (\"100% fish-safe\") and\n       FAQ Q4 (\"oil-bath lubrication\") directly contradict each other.\n       Knowledgeable pond buyers will reject this pump as unsafe for fish.\n       Fix: Add \"white mineral oil (food-safe, non-toxic to fish)\" to FAQ Q4.\n       Also: Motor is AIR-FILLED, not oil-immersed (PumpBiz: \"air filled copper wound motor\").\n\n     P0-4 [CONFIRMED]: NO FLOW PERFORMANCE CHART\n       GardenPonds.com 4PN table: 10ft=4,350 GPH | 15ft=3,750 GPH | 20ft=3,120 GPH | Max=29ft\n       Gallery shows PNFlowchart image but values not in text for SEO\/accessibility.\n       Fix: Add text performance table.\n\n     P0-5 [CONFIRMED]: WARRANTY ABSENT — 2 YEARS (19th instance)\n       Amazon, ePumps, PumpBiz, GardenPonds: \"All Tsurumi Pumps come with a 2 year warranty.\"\n       Also: UL \u0026 CSA certified — absent.\n\n     P0-6 [CONFIRMED]: AIR-FILLED MOTOR ABSENT; PPD IMPLIES OIL-IMMERSED MOTOR\n       PumpBiz: \"continuous duty air filled copper wound highly efficient motor.\"\n       Oil Lifter lubricates only seal FACES — motor cavity is air-filled.\n\n     P0-7 [CONFIRMED]: BALL BEARING LIFE RATING (B-10, 60,000 HOURS) ABSENT\n       PumpBiz + Amazon 3PN sibling: \"permanently lubricated sealed ball bearings\n       rated B-10 60,000 hours.\"\n\n     P0-8 [CONFIRMED]: NOT INDEXED — 0 GSC IMPRESSIONS (13th+ instance)\n       Both PN siblings are indexed PAGE 1: 50PN2.25S (9 imp), 50PN2.75S (12 imp).\n\n     CONFIRMED CORRECT:\n     - SKU 68115 ✓ (PPD internal; Tsurumi model: 50PN2.4S \/ 4PN)\n     - \"1\/2 HP\" ✓\n     - \"115V\" ✓\n     - \"4,740 GPH\" max flow ✓\n     - \"Semi-vortex impeller\" ✓\n     - \"Solids up to 0.4 inches\" ✓ (Tsurumi Canada: 0.394\")\n     - \"Double Inside Mechanical Seal with SIC faces\" ✓\n     - \"Thermal protection\" ✓\n     - \"Continuous duty\" ✓\n     - \"304 Stainless Steel\" casing ✓\n     - \"Manufactured in Japan\" ✓\n     - \"32-foot cord\" ✓ (Amazon confirms 32 ft for 115V version)\n     - Gallery image 1 (68115.jpg pump photo) ✓\n     - Gallery image 2 (PNFlowchart) ✓ (chart image present, values need text version)\n     - $714.00 price ✓\n\n     CONFIRMED FULL SPEC TABLE:\n       Model: 50PN2.4S (4PN) | SKU: 68115\n       HP: 1\/2 | Voltage: 115V\/60Hz (also 220V) | Max flow: 4,740 GPH\n       MAX HEAD: 29 ft (NOT 39 ft) | Amps: 5.8A max | Watts: 667W max\n       Discharge: 2\" FPT | Cord: 32 ft | Height: 15-1\/4\" | Diameter: 9-5\/8\"\n       Weight: 17 lbs | C.W.L.: 4-1\/8\" | Motor: Air-filled copper wound\n       Seal: Double Inside Mechanical, SIC | Seal lube: White mineral oil Oil Lifter (Patent Pending)\n       Seal protector: V-Ring | Bearings: B-10 60,000 hr | Casing: 304 SS + FRP\n       Series: VANCS | Warranty: 2 Years | Certs: UL, CSA | Made in Japan\n       FLOW: 10ft=4,350 | 15ft=3,750 | 20ft=3,120 | Max=29ft\n     =============================================================\n--\u003e\n\u003cstyle\u003e\n.fw{font-family:inherit;color:inherit;max-width:100%}\n.fw h2{font-size:1.35em;font-weight:700;margin:2em 0 .6em;padding-bottom:.25em;\n  border-bottom:2px solid #1a5276;color:#1a5276}\n.fw p{margin:0 0 1em;line-height:1.65}\n.fw ul{margin:0 0 1.2em 1.4em;padding:0}\n.fw li{margin-bottom:.5em;line-height:1.6}\n.co{border-left:4px solid #1a5276;background:#d6eaf8;padding:.9em 1.1em;\n  margin:1em 0 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12px;font-weight:600}\n.ftbl td{padding:8px 12px;border:1px solid #ddd;line-height:1.5}\n.ftbl tr:nth-child(even) td{background:#f4f6f8}\n.ftbl tr:nth-child(odd) td{background:#fff}\n.ftbl .hi{color:#1e8449;font-weight:700}\n.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:1em 0 1.5em}\n@media(max-width:600px){.grid2{grid-template-columns:1fr}}\n.card{border:1px solid #d0dce8;border-radius:5px;padding:13px 15px;background:#f8fbff}\n.card h4{margin:0 0 8px;font-size:.96em;font-weight:700;color:#1a5276;\n  border-bottom:1px solid #d0dce8;padding-bottom:5px}\n.card ul{margin:0;padding:0 0 0 1.1em}\n.card li{font-size:.88em;line-height:1.65;color:#333;margin-bottom:3px}\n.ktbl{width:100%;border-collapse:collapse;margin:.8em 0 1.5em;font-size:.87em}\n.ktbl th{background:#1a5276;color:#fff;padding:8px 11px;text-align:center;font-weight:600}\n.ktbl td{padding:7px 11px;border:1px solid #ddd;text-align:center;line-height:1.5}\n.ktbl tr:nth-child(even) td{background:#f4f6f8}\n.ktbl .this{font-weight:700;color:#1a5276;background:#eaf2fb!important}\n.faq details{border:1px solid #d0dce8;border-radius:4px;margin-bottom:8px;overflow:hidden}\n.faq summary{background:#eaf2fb;padding:13px 16px;font-weight:600;font-size:.97em;\n  cursor:pointer;list-style:none;display:flex;justify-content:space-between;\n  align-items:center;color:#1a5276;border-left:3px solid #1a5276;\n  user-select:none;-webkit-user-select:none}\n.faq summary::-webkit-details-marker{display:none}\n.faq summary::after{content:'+';font-size:1.4em;font-weight:300;line-height:1;\n  color:#1a5276;flex-shrink:0;margin-left:12px}\n.faq details[open] summary::after{content:'-'}\n.fb{padding:14px 16px 16px;background:#fff;line-height:1.65;font-size:.95em;\n  border-top:1px solid #e0eaf3}\n.fb p{margin:0 0 .8em}\n.fb p:last-child{margin-bottom:0}\n.fb ul{margin:.4em 0 .8em 1.3em}\n.fb li{margin-bottom:.3em}\n.cta{background:#1a5276;color:#fff;padding:1.15em 1.4em;border-radius:4px;\n  margin:1.8em 0 .5em;line-height:1.65}\n.cta p{margin:0;color:#fff}\n.cta p+p{margin-top:.7em}\n.cta a{color:#aed6f1;font-weight:700}\n\u003c\/style\u003e\n\u003cdiv class=\"fw\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eTsurumi 50PN2.4S (4PN)\u003c\/strong\u003e is a professional-grade, continuous-duty submersible water feature pump manufactured in Japan, delivering \u003cstrong\u003e4,740 GPH at open flow\u003c\/strong\u003e with a maximum head of \u003cstrong\u003e29 feet\u003c\/strong\u003e. Part of Tsurumi’s \u003cstrong\u003eVANCS Series\u003c\/strong\u003e, the 50PN2.4S is engineered for ponds, waterfalls, and water features where long-term reliability is non-negotiable. Its \u003cstrong\u003e304 stainless steel housing and FRP semi-vortex impeller\u003c\/strong\u003e resist corrosion, while the \u003cstrong\u003eDouble Inside Mechanical Seal with SIC faces\u003c\/strong\u003e, \u003cstrong\u003eOil Lifter system\u003c\/strong\u003e (Patent Pending), and \u003cstrong\u003eV-Ring Seal Protector\u003c\/strong\u003e deliver seal life far exceeding standard submersible pumps. The air-filled motor uses \u003cstrong\u003ewhite mineral oil\u003c\/strong\u003e in the sealed chamber — non-toxic to fish — making this pump fully safe for koi ponds and aquatic ecosystems. \u003cstrong\u003ePermanently lubricated ball bearings rated B-10 at 60,000 hours\u003c\/strong\u003e, built-in thermal protection, and Tsurumi’s \u003cstrong\u003e2-Year Warranty\u003c\/strong\u003e back every pump. UL \u0026amp; CSA certified.\u003c\/p\u003e\n\u003cdiv class=\"badges\"\u003e\n\u003cspan class=\"badge\"\u003e50PN2.4S (4PN) | 4,740 GPH | 1\/2 HP | 667W | 5.8A\u003c\/span\u003e \u003cspan class=\"badge\"\u003e2\" FPT Discharge | 29 ft Max Head | 32 ft Cord | 15-1\/4\"H × 9-5\/8\"D\u003c\/span\u003e \u003cspan class=\"badge\"\u003eVANCS Series | 304 SS + FRP | Semi-Vortex | Double Inside Seal SIC\u003c\/span\u003e \u003cspan class=\"badge\"\u003eWhite Mineral Oil Seal Lube | Air-Filled Motor | B-10 60,000-Hr Bearings\u003c\/span\u003e \u003cspan class=\"badge bl\"\u003e2-Year Warranty | UL \u0026amp; CSA Certified | Made in Japan\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"co gr\"\u003e\n\u003cstrong\u003eFish-safe professional pump:\u003c\/strong\u003e Tsurumi engineers the 50PN2.4S specifically for garden pond use. The sealed oil chamber uses \u003cstrong\u003ewhite mineral oil\u003c\/strong\u003e — a food-safe lubricant — rather than petroleum-based oil. Even in the unlikely event of a seal failure, white mineral oil poses no risk to koi or aquatic plants.\u003c\/div\u003e\n\u003ch2\u003eWhy Choose the Tsurumi 50PN2.4S (4PN)?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eContinuous-duty Japanese engineering:\u003c\/strong\u003e Tsurumi manufactures industrial submersible pumps for construction, wastewater, and water features worldwide. The 50PN2.4S brings that industrial reliability to pond and waterfall applications, rated for 24\/7 year-round operation without performance degradation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble Inside Mechanical Seal with SIC faces:\u003c\/strong\u003e Silicon carbide (SIC) faces deliver significantly longer operational life than ceramic or rubber-faced seals common in consumer pumps. The dual inside configuration provides redundant protection against water intrusion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil Lifter system with white mineral oil (Patent Pending):\u003c\/strong\u003e Tsurumi’s proprietary Oil Lifter delivers food-safe white mineral oil precisely to the seal faces, providing optimized lubrication without immersing the motor in oil. The motor itself is air-filled — a design choice that maximizes heat dissipation for continuous duty.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eV-Ring Seal Protector:\u003c\/strong\u003e A secondary barrier that shields the mechanical seal faces from abrasive particles — important in installations where silt, grit, or organic debris may be present in the water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePermanently lubricated sealed ball bearings, B-10 rated 60,000 hours:\u003c\/strong\u003e The B-10 rating means 90% of bearings will exceed this service life. At continuous 24\/7 operation, 60,000 hours equals approximately 6.8 years minimum rated life — a published engineering specification, not a marketing claim.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSemi-vortex FRP impeller passes solids and stringy material:\u003c\/strong\u003e Fiberglass-reinforced plastic (FRP) for abrasion resistance. The semi-vortex design handles solids up to 0.4” and stringy debris without the impeller becoming fouled — critical for ponds with leaves, algae, and organic matter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Stainless Steel motor casing + FRP components:\u003c\/strong\u003e The motor housing is 304 SS for corrosion resistance in continuous water immersion. The impeller, volute, and top cover use FRP for lightweight durability and chemical resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWatertight cable entrance with anti-wicking block:\u003c\/strong\u003e Prevents water migration up the power cable and into the motor housing — a failure mode that ends many lesser pumps prematurely in permanent submersible installations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"stbl\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"hi\"\u003e\u003cstrong\u003e50PN2.4S (also: 4PN) | SKU 68115\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHorsepower\u003c\/td\u003e\n\u003ctd\u003e1\/2 HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage \/ Hz\u003c\/td\u003e\n\u003ctd\u003e115V \/ 60Hz (also available: 220V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Flow Rate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"hi\"\u003e\u003cstrong\u003e4,740 GPH (at open flow)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Head (Shut-Off)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"hi\"\u003e\u003cstrong\u003e29 ft\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmps (maximum)\u003c\/td\u003e\n\u003ctd\u003e5.8A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWatts (maximum)\u003c\/td\u003e\n\u003ctd\u003e667W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDischarge\u003c\/td\u003e\n\u003ctd\u003e2” FPT (Female Pipe Thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCord Length\u003c\/td\u003e\n\u003ctd\u003e32 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight\u003c\/td\u003e\n\u003ctd\u003e15-1\/4 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e9-5\/8 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eC.W.L. (Min. Submersion)\u003c\/td\u003e\n\u003ctd\u003e4-1\/8 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e17 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolids Handling\u003c\/td\u003e\n\u003ctd\u003eUp to 0.4” (0.394”)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImpeller Type\u003c\/td\u003e\n\u003ctd\u003eSemi-vortex, FRP (Fiberglass Reinforced Plastic)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor Type\u003c\/td\u003e\n\u003ctd\u003eAir-filled copper wound — continuous duty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor Housing\u003c\/td\u003e\n\u003ctd\u003e304 Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBearings\u003c\/td\u003e\n\u003ctd\u003ePermanently lubricated sealed ball bearings — B-10 rated 60,000 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMechanical Seal\u003c\/td\u003e\n\u003ctd\u003eDouble Inside Mechanical Seal, SIC (Silicon Carbide) faces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeal Lubrication\u003c\/td\u003e\n\u003ctd\u003eOil Lifter system — white mineral oil (fish-safe, Patent Pending)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeal Protector\u003c\/td\u003e\n\u003ctd\u003eV-Ring Seal Protector (abrasive particle barrier)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Entrance\u003c\/td\u003e\n\u003ctd\u003eWatertight with anti-wicking block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Protection\u003c\/td\u003e\n\u003ctd\u003eBuilt-in motor thermal protector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eVANCS Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eMade in Japan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"hi\"\u003e\u003cstrong\u003e2-Year Warranty from date of purchase\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL \u0026amp; CSA Certified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eFlow Performance Chart\u003c\/h2\u003e\n\u003cp\u003ePerformance data for the Tsurumi 50PN2.4S (4PN) at various operating head heights:\u003c\/p\u003e\n\u003ctable class=\"ftbl\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eHead Height\u003c\/th\u003e\n\u003cth\u003eFlow Rate\u003c\/th\u003e\n\u003cth\u003eTypical Application\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e0 ft (open flow)\u003c\/td\u003e\n\u003ctd class=\"hi\"\u003e4,740 GPH\u003c\/td\u003e\n\u003ctd\u003eNo vertical lift\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10 ft\u003c\/td\u003e\n\u003ctd class=\"hi\"\u003e4,350 GPH\u003c\/td\u003e\n\u003ctd\u003eStandard residential waterfall\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e15 ft\u003c\/td\u003e\n\u003ctd class=\"hi\"\u003e3,750 GPH\u003c\/td\u003e\n\u003ctd\u003eTaller residential or small commercial waterfall\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e20 ft\u003c\/td\u003e\n\u003ctd class=\"hi\"\u003e3,120 GPH\u003c\/td\u003e\n\u003ctd\u003eHigh residential or formal water feature\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e29 ft (max head)\u003c\/td\u003e\n\u003ctd\u003e0 GPH\u003c\/td\u003e\n\u003ctd\u003eMaximum head — shut-off point\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"co am\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e The 50PN2.4S is rated for 10–20 ft of operating head for optimal performance. Do not specify for applications requiring more than 25 ft of head — operating near the shut-off point stresses the motor and reduces pump life. For waterfalls above 25 ft, consider the Tsurumi 50PN2.75S (8PN, 1 HP, 43 ft max head).\u003c\/div\u003e\n\u003ch2\u003eTsurumi PN Series Family\u003c\/h2\u003e\n\u003cp\u003eAll PN Series pumps share the same VANCS platform: 304 SS casing, FRP semi-vortex impeller, Double Inside Mechanical Seal SIC, Oil Lifter, V-Ring Protector, air-filled motor, B-10 60,000-hr bearings, 2\" FPT discharge, 32 ft cord, and 2-Year Warranty.\u003c\/p\u003e\n\u003ctable class=\"ktbl\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eAlso Known As\u003c\/th\u003e\n\u003cth\u003eHP\u003c\/th\u003e\n\u003cth\u003eMax GPH\u003c\/th\u003e\n\u003cth\u003eMax Head\u003c\/th\u003e\n\u003cth\u003eAt 10 ft\u003c\/th\u003e\n\u003cth\u003eAt 20 ft\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e50PN2.25S\u003c\/td\u003e\n\u003ctd\u003e3PN\u003c\/td\u003e\n\u003ctd\u003e1\/3\u003c\/td\u003e\n\u003ctd\u003e3,540\u003c\/td\u003e\n\u003ctd\u003e~27 ft\u003c\/td\u003e\n\u003ctd\u003e3,300\u003c\/td\u003e\n\u003ctd\u003e1,440\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"this\"\u003e\n\u003ctd\u003e\u003cstrong\u003e50PN2.4S (this)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e4PN\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e1\/2\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e4,740\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e29 ft\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e4,350\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e3,120\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e50PN2.75S\u003c\/td\u003e\n\u003ctd\u003e8PN\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003e5,550\u003c\/td\u003e\n\u003ctd\u003e~43 ft\u003c\/td\u003e\n\u003ctd\u003e5,340\u003c\/td\u003e\n\u003ctd\u003e4,740\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eIdeal Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMedium-to-large residential waterfalls (10–20 ft head, 3,000–4,500 GPH)\u003c\/li\u003e\n\u003cli\u003eCommercial and municipal water features requiring continuous-duty reliability\u003c\/li\u003e\n\u003cli\u003eFormal fountains and architectural water displays\u003c\/li\u003e\n\u003cli\u003ePondless waterfall systems in pump vault installations\u003c\/li\u003e\n\u003cli\u003eKoi ponds and water gardens requiring high-flow recirculation\u003c\/li\u003e\n\u003cli\u003eApplications where pump failure or downtime is not acceptable\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat are the performance specs for the Tsurumi 50PN2.4S?\u003c\/summary\u003e\n\u003cdiv class=\"fb\"\u003e\n\u003cp\u003eThe Tsurumi 50PN2.4S (also called the \u003cstrong\u003e4PN\u003c\/strong\u003e) is a 1\/2 HP submersible pump with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMaximum flow rate: \u003cstrong\u003e4,740 GPH\u003c\/strong\u003e (at open flow)\u003c\/li\u003e\n\u003cli\u003eMaximum head (shut-off): \u003cstrong\u003e29 feet\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAt 10 ft head: \u003cstrong\u003e4,350 GPH\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAt 15 ft head: \u003cstrong\u003e3,750 GPH\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAt 20 ft head: \u003cstrong\u003e3,120 GPH\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMaximum amps: \u003cstrong\u003e5.8A\u003c\/strong\u003e | Maximum watts: \u003cstrong\u003e667W\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCord: 32 ft | Discharge: 2” FPT\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor best pump life, size your installation for 10–20 ft of operating head. For waterfalls above 25 ft, we recommend the 50PN2.75S (8PN, 1 HP). Call \u003ca href=\"tel:7655084352\"\u003e(765) 508-4352\u003c\/a\u003e for sizing guidance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhy is the PN Series preferred for fish ponds?\u003c\/summary\u003e\n\u003cdiv class=\"fb\"\u003e\n\u003cp\u003eThe Tsurumi PN Series is specifically designed for pond and water feature use. Key fish-safe features:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhite mineral oil seal lubrication:\u003c\/strong\u003e The sealed oil chamber uses white mineral oil — a food-safe, non-toxic lubricant. Tsurumi specifically chose white mineral oil so that the pump is safe for garden pond ecosystems even in the unlikely event of a seal failure. This is unlike older pump designs that used petroleum-based oil, which can be harmful to fish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir-filled motor:\u003c\/strong\u003e The motor windings are in an air-filled cavity, not submerged in oil. Only the seal faces receive oil lubrication via the Oil Lifter system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 Stainless Steel housing:\u003c\/strong\u003e Corrosion-resistant, no leaching of metal contaminants.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFRP impeller, volute, and top cover:\u003c\/strong\u003e Fiberglass-reinforced plastic components resist chemical breakdown in pond water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow does the vortex impeller prevent clogging?\u003c\/summary\u003e\n\u003cdiv class=\"fb\"\u003e\n\u003cp\u003eThe \u003cstrong\u003esemi-vortex FRP impeller\u003c\/strong\u003e creates a rotating flow pattern that draws debris through the pump without requiring contact between solids and the impeller itself. This allows solids up to \u003cstrong\u003e0.4 inches\u003c\/strong\u003e in diameter and stringy material (algae, leaves, fibrous debris) to pass through the pump without clogging.\u003c\/p\u003e\n\u003cp\u003eIn pond applications, this means the pump continues operating normally when small leaves, algae strings, or organic debris make it past the intake screen — rather than stalling or requiring manual cleaning to remove a lodged solid. The \u003cstrong\u003eV-Ring Seal Protector\u003c\/strong\u003e provides additional protection by blocking abrasive particles from reaching the mechanical seal faces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes this pump use oil-bath lubrication? Is it safe for fish?\u003c\/summary\u003e\n\u003cdiv class=\"fb\"\u003e\n\u003cp\u003eYes, and yes — but with an important distinction.\u003c\/p\u003e\n\u003cp\u003eThe 50PN2.4S uses Tsurumi’s \u003cstrong\u003eOil Lifter system (Patent Pending)\u003c\/strong\u003e to lubricate the mechanical seal faces. The Oil Lifter uses \u003cstrong\u003ewhite mineral oil\u003c\/strong\u003e — a food-grade, non-toxic lubricant used in food processing and pharmaceutical applications. It is not petroleum-based cutting oil, gear oil, or motor oil.\u003c\/p\u003e\n\u003cp\u003ePer Tsurumi’s own product description: \u003cem\u003e“the white mineral oil used in the oil chamber creates a safe environment for a thriving and safe garden pond ecosystem.”\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003emotor itself is air-filled\u003c\/strong\u003e — the oil system is separate and sealed, lubricating only the seal faces. Even in the unlikely event of a seal failure, only a small volume of white mineral oil would enter the water — which is safe for koi and aquatic plants.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs the 50PN2.4S rated for 24\/7 operation?\u003c\/summary\u003e\n\u003cdiv class=\"fb\"\u003e\n\u003cp\u003eYes. The 50PN2.4S is a \u003cstrong\u003econtinuous-duty rated\u003c\/strong\u003e pump designed for year-round 24\/7 operation. Specific features supporting continuous duty:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir-filled copper wound motor\u003c\/strong\u003e — superior heat dissipation for continuous operation vs oil-immersed designs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePermanently lubricated ball bearings, B-10 rated 60,000 hours\u003c\/strong\u003e — approximately 6.8 years minimum rated bearing life at continuous 24\/7 operation (90th percentile)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in thermal protector\u003c\/strong\u003e — automatically shuts down the motor if it reaches critical temperature, protecting against burnout\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWatertight cable entrance with anti-wicking block\u003c\/strong\u003e — prevents water from migrating up the cord and into the motor housing over years of operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat are the electrical and plumbing requirements?\u003c\/summary\u003e\n\u003cdiv class=\"fb\"\u003e\n\u003cp\u003eElectrical:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e115V \/ 60Hz\u003c\/strong\u003e (a 220V version is also available — note voltage when ordering)\u003c\/li\u003e\n\u003cli\u003eMaximum current: \u003cstrong\u003e5.8 Amps\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMaximum power: \u003cstrong\u003e667 Watts\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePower cord: \u003cstrong\u003e32 feet\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eUL \u0026amp; CSA certified\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePlumbing:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDischarge: \u003cstrong\u003e2” FPT (Female Pipe Thread)\u003c\/strong\u003e — connect with a 2” male NPT fitting\u003c\/li\u003e\n\u003cli\u003eMinimum submersion depth (C.W.L.): \u003cstrong\u003e4-1\/8 inches\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePump dimensions: \u003cstrong\u003e15-1\/4” tall × 9-5\/8” diameter\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003ch2\u003eWhy Buy from Pond Pro Direct?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuthentic Tsurumi product\u003c\/strong\u003e with full 2-year factory warranty coverage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional water feature expertise\u003c\/strong\u003e — call Mon–Fri 9 AM–5 PM EST for pump sizing and system design\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrice Match\u003c\/strong\u003e on identical products from authorized retailers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"cta\"\u003e\n\u003cp\u003eTsurumi 50PN2.4S (4PN) — 4,740 GPH max | 1\/2 HP | 667W | 5.8A | 29 ft max head | 2\" FPT | 32 ft cord | 15-1\/4\"H × 9-5\/8\"D | 17 lbs | white mineral oil Oil Lifter | air-filled motor | B-10 60,000-hr bearings | 304 SS + FRP | VANCS Series | 2-year warranty | UL \u0026amp; CSA | Made in Japan.\u003c\/p\u003e\n\u003cp\u003eQuestions about pump sizing for your waterfall or water feature? Call or text \u003ca href=\"tel:7655084352\"\u003e(765) 508-4352\u003c\/a\u003e — Monday through Friday, 9 AM to 5 PM EST.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cfms-fly-app data-fms-version=\"3.7.10\" id=\"fly-msg-app\"\u003e\u003c\/fms-fly-app\u003e\u003c\/p\u003e\n\u003cdiv class=\"wsc-contextmenu wsc-element wsc-theme-custom wsc--hidden wsc--border-box\"\u003e\n\u003cul class=\"wsc-list wsc-contextmenu__list\" id=\"\" role=\"tree\" aria-label=\"Suggestion popup\"\u003e\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wsc-assistant-badge wsc-element wsc-theme-custom wsc--hidden wsc--border-box\"\u003e\u003cbutton class=\"wsc-button wsc-button--clear wsc--focusable wsc-assistantbadge__assistant-dialog-button wsc-assistantbadge__button\" type=\"button\" role=\"button\" title=\"AI writing assistant\" aria-label=\"AI writing assistant\" aria-disabled=\"false\" tabindex=\"-1\"\u003e \u003cspan class=\"wsc-icon wsc-icon-assistantDialog wsc-assistantbadge__assistant-dialog-icon wsc-button__icon\"\u003e\u003c\/span\u003e \u003cspan class=\"wsc-button__text\"\u003e\u003c\/span\u003e\u003c\/button\u003e\u003c\/div\u003e","brand":"Tsurumi","offers":[{"title":"Default Title","offer_id":51120823927105,"sku":"68115","price":714.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0956\/6919\/0977\/files\/68115.jpg?v=1765554698"},{"product_id":"tsurumi-50pn2-75s-water-feature-pump","title":"Tsurumi 50PN2.75S 1 HP Water Feature Pump – High-Flow Submersible Pump for Waterfalls, Fountains \u0026 Ponds","description":"\u003c!-- =============================================================\n     TSURUMI 50PN2.75S (8PN) WATER FEATURE PUMP\n     Shopify Product Description Body -- PPD Brand Style\n     =============================================================\n     !! MANDATORY FIXES -- 8 P0 ERRORS -- DO NOT PUBLISH AS-IS !!\n\n     P0-1: MAX FLOW RATE \"5,820 GPH\" -- CONFIRMED 5,520 GPH\n       PondUSA (dedicated 8PN spec table): \"Maximum Flow Rate: 5,520 GPH.\"\n       Aquascape (official Tsurumi partner, SKU 29495): 5,520 GPH.\n       AquaticPonds, pondsonline.ca, Pond Supplies Canada: unanimous 5,520 GPH.\n       \"5,820 GPH\" appears in no verified Tsurumi source.\n\n     P0-2: MAX HEAD \"59 FEET\" -- CONFIRMED 56 ft\n       PondUSA spec table: \"Maximum Head: 56 ft.\"\n       Amazon 8PN: \"maximum head of 56 feet.\"\n       PetsAndPonds: \"Max Head: 56'.\"\n       Also absent: Best operating range (27-35 ft) and required range (15-41 ft).\n\n     P0-3: CORD LENGTH \"32 FEET\" -- CONFIRMED 20 ft (STANDARD 115V MODEL)\n       PondUSA: \"Power Cord Length: 20 ft.\"\n       ePumps: \"Cable Length: 20 ft.\" Amazon 8PN description: \"20ft cord.\"\n       Pond Supplies Canada: \"20 ft. power cord.\"\n       32 ft = 230V variant cord. Standard 115V 50PN2.75S ships with 20 ft.\n       Critical practical error -- buyers plan electrical layouts around stated cord length.\n\n     P0-4: WATTAGE ABSENT -- CONFIRMED 1,000W (8.7A)\n       PondUSA: \"Power Consumption: 1,000 W \/ 8.7 A.\"\n       Not stated anywhere in PPD spec table (only 8.6A in FAQ Q6).\n\n     P0-5: DISCHARGE \"2-INCH NPT\" -- CONFIRMED 2\" FPT (FEMALE THREADED)\n       PondUSA: \"Discharge: 2 in FPT (female threaded).\"\n       Amazon 8PN: \"2 female threaded outlet.\"\n       NPT does not specify male\/female orientation; FPT does.\n\n     P0-6: WARRANTY ABSENT -- CONFIRMED 2-YEAR LIMITED; UL \u0026 CSA CERTIFIED\n       PondUSA: \"2-year manufacturer's limited warranty.\"\n       Amazon 8PN: \"2 year warranty from date of purchase.\" Seventh warranty error in engagement.\n       Also absent: UL \u0026 CSA certifications.\n\n     P0-7: SPEC TABLE ALMOST ENTIRELY EMPTY -- MISSING ALL PERFORMANCE,\n       ELECTRICAL, AND PHYSICAL SPECS\n       Flow rate, max head, operating ranges, watts, amps, discharge, cord,\n       dimensions, weight, solids handling, warranty -- all absent.\n       This is the sparsest spec table in the engagement for an $864 pump.\n\n     P0-8: \"HIGH-FLOW\" IN TITLE BUT GPH ABSENT FROM SPEC TABLE AND H1\n       The primary decision metric (GPH) does not appear in spec table, H1, or intro.\n       FAQ Q1 is the only location -- and it states the wrong figure (5,820 vs 5,520).\n\n     CONFIRMED CORRECT ON PPD PAGE:\n     - Model 50PN2.75S correct\n     - HP: 1 HP correct\n     - Voltage: 115V correct\n     - Semi-vortex FRP impeller correct\n     - Solids 0.4\" correct (0.394\" confirmed)\n     - Dual inside mechanical seal \/ SiC faces correct\n     - Oil Lifter (Patent Pending) correct\n     - V-Ring Seal Protector correct\n     - 304 stainless steel confirmed by CESSCO spec sheet\n     - Fish-safe \/ white mineral oil correct\n     - Continuous duty correct\n     - Thermal protector (auto-reset) correct\n     - Amps 8.6A (confirmed 8.7A -- minor rounding)\n     - $864.00 price consistent with PondUSA ($864.00)\n     - Koi-pond safe correct\n\n     CONFIRMED FULL SPEC TABLE (PondUSA dedicated 8PN spec table + ePumps + Amazon):\n       Model: 50PN2.75S | Trade name: 8PN | Aquascape SKU: 29495\n       Max flow: 5,520 GPH\n       Max head: 56 ft\n       Best operating range: 27-35 ft\n       Required operating range: 15-41 ft\n       Power: 1,000W \/ 8.7A | 115V, 60 Hz\n       Discharge: 2\" FPT (female threaded)\n       Cord: 20 ft (standard 115V model)\n       Dimensions: 9.5\"L x 6.5\"W x 14\"H (~9 5\/8\" Dia x 15 7\/8\"H per ePumps)\n       Weight: ~23 lbs\n       Impeller: Semi-vortex FRP\n       Solids: up to 0.4\"\n       Seal: Double Inside Mechanical with SiC faces\n       Oil Lifter: Patent Pending\n       Construction: 304 stainless steel housing; FRP impeller\/volute\/cover\n       Fish-safe: white mineral oil\n       Thermal protection: auto-reset motor protector\n       Certifications: UL \u0026 CSA\n       Warranty: 2-year limited\n       Not for: swimming pools or salt water\n       GFCI required\n     =============================================================\n--\u003e\n\u003cstyle\u003e\n.fw{font-family:inherit;color:inherit;max-width:100%}\n.fw h2{font-size:1.35em;font-weight:700;margin:2em 0 .6em;padding-bottom:.25em;\n  border-bottom:2px solid #1a5276;color:#1a5276}\n.fw p{margin:0 0 1em;line-height:1.65}\n.fw ul{margin:0 0 1.2em 1.4em;padding:0}\n.fw li{margin-bottom:.5em;line-height:1.6}\n.co{border-left:4px solid #1a5276;background:#d6eaf8;padding:.9em 1.1em;\n  margin:1em 0 1.5em;border-radius:3px;line-height:1.65}\n.co.gr{border-left-color:#1e8449;background:#d5f5e3}\n.co.am{border-left-color:#b7770d;background:#fef9e7}\n.badges{display:flex;flex-wrap:wrap;gap:.55em;margin:.8em 0 1.5em}\n.badge{background:#d5f5e3;border:1px solid #1e8449;color:#1e8449;font-weight:700;\n  font-size:.87em;padding:5px 13px;border-radius:20px;white-space:nowrap}\n.badge.bl{background:#d6eaf8;border-color:#1a5276;color:#1a5276}\n.stbl{width:100%;border-collapse:collapse;margin:.8em 0 1.5em;font-size:.9em}\n.stbl th{background:#1a5276;color:#fff;text-align:left;padding:9px 12px;font-weight:600}\n.stbl td{padding:8px 12px;border:1px solid #ddd;vertical-align:top;line-height:1.5}\n.stbl tr:nth-child(even) td{background:#f4f6f8}\n.stbl tr:nth-child(odd) td{background:#fff}\n.stbl .hi{color:#1e8449;font-weight:600}\n.stbl .am{color:#b7770d;font-weight:600}\n.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:1em 0 1.5em}\n@media(max-width:600px){.grid2{grid-template-columns:1fr}}\n.card{border:1px solid #d0dce8;border-radius:5px;padding:13px 15px;background:#f8fbff}\n.card h4{margin:0 0 8px;font-size:.96em;font-weight:700;color:#1a5276;\n  border-bottom:1px solid #d0dce8;padding-bottom:5px}\n.card ul{margin:0;padding:0 0 0 1.1em}\n.card li{font-size:.88em;line-height:1.65;color:#333;margin-bottom:3px}\n.ktbl{width:100%;border-collapse:collapse;margin:.8em 0 1.5em;font-size:.87em}\n.ktbl th{background:#1a5276;color:#fff;padding:8px 11px;text-align:left;font-weight:600}\n.ktbl td{padding:7px 11px;border:1px solid #ddd;vertical-align:top;line-height:1.5}\n.ktbl tr:nth-child(even) td{background:#f4f6f8}\n.ktbl tr:nth-child(odd) td{background:#fff}\n.ktbl .bold{font-weight:700;color:#1a5276}\n.faq details{border:1px solid #d0dce8;border-radius:4px;margin-bottom:8px;overflow:hidden}\n.faq summary{background:#eaf2fb;padding:13px 16px;font-weight:600;font-size:.97em;\n  cursor:pointer;list-style:none;display:flex;justify-content:space-between;\n  align-items:center;color:#1a5276;border-left:3px solid #1a5276;\n  user-select:none;-webkit-user-select:none}\n.faq summary::-webkit-details-marker{display:none}\n.faq summary::after{content:'+';font-size:1.4em;font-weight:300;line-height:1;\n  color:#1a5276;flex-shrink:0;margin-left:12px}\n.faq details[open] summary::after{content:'-'}\n.fb{padding:14px 16px 16px;background:#fff;line-height:1.65;font-size:.95em;\n  border-top:1px solid #e0eaf3}\n.fb p{margin:0 0 .8em}\n.fb p:last-child{margin-bottom:0}\n.fb ul{margin:.4em 0 .8em 1.3em}\n.fb li{margin-bottom:.3em}\n.cta{background:#1a5276;color:#fff;padding:1.15em 1.4em;border-radius:4px;\n  margin:1.8em 0 .5em;line-height:1.65}\n.cta p{margin:0;color:#fff}\n.cta p+p{margin-top:.7em}\n.cta a{color:#aed6f1;font-weight:700}\n.disc{font-size:.84em;color:#666;margin-top:1.5em;padding-top:.8em;border-top:1px solid #eee}\n\u003c\/style\u003e\n\u003cdiv class=\"fw\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eTsurumi 50PN2.75S\u003c\/strong\u003e — also known as the \u003cstrong\u003eTsurumi 8PN\u003c\/strong\u003e — is a professional-grade, contractor-trusted submersible water feature pump delivering \u003cstrong\u003e5,520 GPH\u003c\/strong\u003e at maximum flow with a \u003cstrong\u003e56 ft max head\u003c\/strong\u003e. Engineered in Japan and built for continuous 24\/7 operation, it is the industry standard for large-scale pond, waterfall, and fountain installations where long-term reliability is critical. The 50PN2.75S pairs a \u003cstrong\u003e304 stainless steel motor housing\u003c\/strong\u003e with an \u003cstrong\u003eFRP semi-vortex impeller\u003c\/strong\u003e that passes solids up to \u003cstrong\u003e0.4 inches\u003c\/strong\u003e, a \u003cstrong\u003eDouble Inside Mechanical Seal with SiC faces\u003c\/strong\u003e, and Tsurumi’s \u003cstrong\u003epatented Oil Lifter\u003c\/strong\u003e for superior seal lubrication and service life. \u003cstrong\u003eUL \u0026amp; CSA certified. 2-year limited warranty.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"co am\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Must be connected to a properly grounded, GFCI-protected 120-volt outlet. Submersible operation only — keep fully submerged during use. Not approved for use in swimming pools or salt water.\u003c\/div\u003e\n\u003cdiv class=\"badges\"\u003e\n\u003cspan class=\"badge\"\u003e5,520 GPH Max | 56 ft Max Head | 1 HP | 1,000W | 8.7A\u003c\/span\u003e \u003cspan class=\"badge\"\u003e2\" FPT Discharge | 20 ft Cord | 115V\u003c\/span\u003e \u003cspan class=\"badge\"\u003eSemi-Vortex FRP | 0.4\" Solids | Dual SiC Mechanical Seal\u003c\/span\u003e \u003cspan class=\"badge\"\u003e304 SS Housing | Oil Lifter | V-Ring Seal | Continuous Duty\u003c\/span\u003e \u003cspan class=\"badge bl\"\u003e50PN2.75S \/ 8PN | UL \u0026amp; CSA | 2-Year Warranty | Made in Japan\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"stbl\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel \/ Trade Name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"hi\"\u003e\u003cstrong\u003e50PN2.75S | Also known as: 8PN | Aquascape SKU 29495\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Flow Rate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"hi\"\u003e\u003cstrong\u003e5,520 GPH\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Head\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"hi\"\u003e\u003cstrong\u003e56 ft\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest Operating Head Range\u003c\/td\u003e\n\u003ctd\u003e27 ft – 35 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRequired Operating Head Range\u003c\/td\u003e\n\u003ctd\u003e15 ft – 41 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHP\u003c\/td\u003e\n\u003ctd\u003e1 HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"hi\"\u003e\u003cstrong\u003e1,000W \/ 8.7A\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e115V, 60 Hz (single phase)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDischarge\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"hi\"\u003e\u003cstrong\u003e2” FPT (female threaded)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCord Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"hi\"\u003e\u003cstrong\u003e20 ft (standard 115V model)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e9.5”L × 6.5”W × 14”H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eApproximately 23 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImpeller\u003c\/td\u003e\n\u003ctd\u003eSemi-vortex FRP (Fiberglass Reinforced Plastic)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolids Handling\u003c\/td\u003e\n\u003ctd\u003eUp to 0.4 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMechanical Seal\u003c\/td\u003e\n\u003ctd\u003eDouble Inside Mechanical Seal with Silicon Carbide (SiC) faces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOil Lifter\u003c\/td\u003e\n\u003ctd\u003eTsurumi Oil Lifter (Patent Pending) — lubricates seal faces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeal Protection\u003c\/td\u003e\n\u003ctd\u003eV-Ring Seal Protector (guards against abrasive particles)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor Housing\u003c\/td\u003e\n\u003ctd\u003e304 stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePump Casing\u003c\/td\u003e\n\u003ctd\u003eFRP (Fiberglass Reinforced Plastic)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFish Safe\u003c\/td\u003e\n\u003ctd\u003eYes — white mineral oil in oil chamber; no harmful leaks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Protection\u003c\/td\u003e\n\u003ctd\u003eBuilt-in motor protector with automatic reset\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDuty Rating\u003c\/td\u003e\n\u003ctd\u003eContinuous duty 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL \u0026amp; CSA certified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"hi\"\u003e\u003cstrong\u003e2-Year Limited\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eTsurumi — engineered in Japan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e5,520 GPH at max flow \/ 56 ft max head:\u003c\/strong\u003e Consistent high-volume output even at elevation; best-in-class for the 1 HP water feature pump category\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 stainless steel housing + FRP components:\u003c\/strong\u003e Corrosion-resistant construction for the widest variety of water chemistry conditions; ideal for long-term outdoor installations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSemi-vortex FRP impeller:\u003c\/strong\u003e Passes solids up to 0.4 inches and stringy material without clogging; resists wear from abrasive particles in the pumpage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble Inside Mechanical Seal with SiC faces:\u003c\/strong\u003e Silicon carbide-on-silicon carbide contact surfaces provide the longest possible operational life and prevent leakage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePatented Oil Lifter:\u003c\/strong\u003e Tsurumi’s proprietary mechanism lubricates the mechanical seal faces using the pump’s own oil, extending service life beyond conventional seal designs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eV-Ring Seal Protector:\u003c\/strong\u003e A secondary seal layer guards the mechanical seal from abrasive particles in the water, adding another layer of longevity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFish-safe mineral oil:\u003c\/strong\u003e White mineral oil in the oil chamber creates a safe environment for koi and all aquatic life; no toxic leaks under normal operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContinuous duty 24\/7:\u003c\/strong\u003e Air-filled copper-wound motor designed for year-round, uninterrupted operation without scheduled rest cycles\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in thermal protector:\u003c\/strong\u003e Automatically shuts down the motor if excessive heat is detected and resets when temperature normalizes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUL \u0026amp; CSA certified:\u003c\/strong\u003e Meets safety standards for residential, commercial, and municipal applications\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e2-Year Limited Warranty\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eIdeal Applications\u003c\/h2\u003e\n\u003cdiv class=\"grid2\"\u003e\n\u003cdiv class=\"card\"\u003e\n\u003ch4\u003eWater Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eLarge residential waterfalls\u003c\/li\u003e\n\u003cli\u003eHigh-volume pondless waterfall systems\u003c\/li\u003e\n\u003cli\u003eArchitectural and formal fountains\u003c\/li\u003e\n\u003cli\u003eCommercial and municipal water features\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003ch4\u003ePond Systems\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eLarge koi ponds (skimmer-mounted)\u003c\/li\u003e\n\u003cli\u003eAquascape skimmer filter systems\u003c\/li\u003e\n\u003cli\u003ePondless Waterfall filter vaults\u003c\/li\u003e\n\u003cli\u003eHigh-volume decorative streams\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eTsurumi PN Series — Size Comparison\u003c\/h2\u003e\n\u003ctable class=\"ktbl\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eTrade Name\u003c\/th\u003e\n\u003cth\u003eGPH\u003c\/th\u003e\n\u003cth\u003eHP\u003c\/th\u003e\n\u003cth\u003eMax Head\u003c\/th\u003e\n\u003cth\u003eBest For\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e50PN2.25S\u003c\/td\u003e\n\u003ctd\u003eSmaller PN variant\u003c\/td\u003e\n\u003ctd\u003eLower GPH\u003c\/td\u003e\n\u003ctd\u003eSmaller HP\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003eMedium ponds \u0026amp; waterfalls\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"bold\"\u003e50PN2.75S\u003c\/td\u003e\n\u003ctd class=\"bold\"\u003e8PN (this pump)\u003c\/td\u003e\n\u003ctd class=\"bold\"\u003e5,520 GPH\u003c\/td\u003e\n\u003ctd class=\"bold\"\u003e1 HP\u003c\/td\u003e\n\u003ctd class=\"bold\"\u003e56 ft\u003c\/td\u003e\n\u003ctd class=\"bold\"\u003eLarge waterfalls \u0026amp; koi ponds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLarger PN \/ 12PN\u003c\/td\u003e\n\u003ctd\u003e12PN\u003c\/td\u003e\n\u003ctd\u003e11,140 GPH\u003c\/td\u003e\n\u003ctd\u003eLarger\u003c\/td\u003e\n\u003ctd\u003eHigher\u003c\/td\u003e\n\u003ctd\u003eVery large commercial features\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eInstallation \u0026amp; Maintenance\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSubmersible only:\u003c\/strong\u003e Keep the pump fully submerged during operation. The motor is cooled by the surrounding water; running dry will cause irreversible damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGFCI required:\u003c\/strong\u003e Connect to a properly grounded GFCI-protected 120-volt outlet. Consult a licensed electrician for fixed installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBest head range:\u003c\/strong\u003e For optimal pump life and efficiency, install within the recommended head range of 27–35 ft. Operating outside 15–41 ft of head is not advised.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlacement:\u003c\/strong\u003e Ideal for Aquascape skimmer boxes, pump vaults, and basin installations. The vertical pump housing matches the PN Series’ compatibility with skimmer designs requiring vertical orientation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDischarge plumbing:\u003c\/strong\u003e Connect to 2” flexible or rigid PVC pipe using a male NPT adapter to the pump’s 2” FPT (female) discharge. Add a check valve to prevent backflow when the pump shuts off.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintenance:\u003c\/strong\u003e Inspect the intake strainer periodically. Clean as needed to maintain full flow. In hard-water areas, check for mineral buildup on the impeller annually.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWinterization:\u003c\/strong\u003e In freezing climates, remove and store the pump indoors to prevent ice damage to seals and housing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat are the performance specs for the Tsurumi 50PN2.75S?\u003c\/summary\u003e\n\u003cdiv class=\"fb\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eTsurumi 50PN2.75S (8PN)\u003c\/strong\u003e delivers:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum flow rate: 5,520 GPH\u003c\/strong\u003e (at minimum\/zero head)\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMaximum head: 56 ft\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eBest operating head range: 27–35 ft\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRequired operating head range: 15–41 ft\u003c\/strong\u003e (do not operate outside this range)\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePower consumption: 1,000W \/ 8.7A at 115V\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDischarge: 2” FPT (female threaded)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCord: 20 ft (standard 115V model)\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor the complete performance curve at various head heights, see the flow chart in the product gallery. The 50PN2.75S excels in high-head applications and consistently maintains strong flow at the 27–35 ft head range most common in large backyard waterfall installations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhy is the Tsurumi PN Series preferred for koi ponds?\u003c\/summary\u003e\n\u003cdiv class=\"fb\"\u003e\n\u003cp\u003eThe Tsurumi PN Series is widely used in koi pond installations for several reasons:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 stainless steel housing + FRP construction:\u003c\/strong\u003e Corrosion-resistant across a wide range of water chemistries, including the slightly lower pH common in established koi ponds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhite mineral oil:\u003c\/strong\u003e The oil chamber uses white mineral oil, which is non-toxic to fish. No petroleum contamination risk under normal operating conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFish-safe design:\u003c\/strong\u003e The pump casing and impeller are made from FRP (Fiberglass Reinforced Plastic) and stainless steel — no brass, bronze, or copper components that could leach into pond water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContinuous duty:\u003c\/strong\u003e Koi ponds require 24\/7 water movement for dissolved oxygen maintenance. The 50PN2.75S is specifically rated for year-round continuous operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh head performance:\u003c\/strong\u003e Many koi ponds with elevated waterfalls operate at 20–35 ft of head. The 50PN2.75S maintains strong flow at these real-world installation heights.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow does the semi-vortex impeller prevent clogging?\u003c\/summary\u003e\n\u003cdiv class=\"fb\"\u003e\n\u003cp\u003eThe \u003cstrong\u003esemi-vortex FRP impeller\u003c\/strong\u003e uses a swirling flow pattern that passes debris through the pump without the debris coming into direct contact with the impeller blades at high velocity. This design:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePasses solids up to \u003cstrong\u003e0.4 inches\u003c\/strong\u003e in diameter without clogging\u003c\/li\u003e\n\u003cli\u003eHandles stringy organic material (algae, leaves) that typically wraps around conventional impellers\u003c\/li\u003e\n\u003cli\u003eReduces maintenance frequency compared to standard direct-drive impeller designs\u003c\/li\u003e\n\u003cli\u003eThe FRP (Fiberglass Reinforced Plastic) construction resists abrasion, extending impeller life even when pumping water with fine particulate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCombined with the \u003cstrong\u003eV-Ring Seal Protector\u003c\/strong\u003e, which shields the mechanical seal from abrasive particles, the 50PN2.75S is designed for use in real-world skimmer and vault environments where the water is not perfectly clean.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes this pump include a mechanical seal and Oil Lifter?\u003c\/summary\u003e\n\u003cdiv class=\"fb\"\u003e\n\u003cp\u003eYes. The \u003cstrong\u003e50PN2.75S\u003c\/strong\u003e features:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble Inside Mechanical Seal with Silicon Carbide (SiC) faces:\u003c\/strong\u003e Silicon carbide is one of the hardest materials used in pump seals, providing exceptional wear resistance and a tight seal against leakage for an extended service life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTsurumi Oil Lifter (Patent Pending):\u003c\/strong\u003e Tsurumi’s proprietary seal lubrication system. The Oil Lifter ensures the mechanical seal faces remain consistently lubricated by the oil in the seal chamber, preventing dry running of the seal even during varying operating conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eV-Ring Seal Protector:\u003c\/strong\u003e A secondary protective ring that deflects abrasive particles away from the mechanical seal, further extending service life.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTogether, these three seal technologies give the Tsurumi PN Series a significantly longer service life than standard single-seal waterfall pumps.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs the Tsurumi 50PN2.75S rated for continuous duty?\u003c\/summary\u003e\n\u003cdiv class=\"fb\"\u003e\n\u003cp\u003eYes. The \u003cstrong\u003e50PN2.75S\u003c\/strong\u003e is rated for \u003cstrong\u003econtinuous duty 24\/7, year-round operation\u003c\/strong\u003e. It uses an air-filled copper-wound motor with permanently lubricated sealed ball bearings rated B-10 60,000 hours (the B-10 bearing life rating means that 90% of bearings will last at least 60,000 hours under rated conditions).\u003c\/p\u003e\n\u003cp\u003eThe pump also includes a \u003cstrong\u003ebuilt-in thermal protector with automatic reset\u003c\/strong\u003e. If the motor temperature exceeds safe limits (which can occur if the pump is starved of flow or encounters unusual load), the protector will automatically shut the pump down and restart it when temperature normalizes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat are the electrical and plumbing requirements?\u003c\/summary\u003e\n\u003cdiv class=\"fb\"\u003e\n\u003cp\u003e\u003cstrong\u003eElectrical:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVoltage: \u003cstrong\u003e115V \/ 60Hz\u003c\/strong\u003e (single phase)\u003c\/li\u003e\n\u003cli\u003ePower consumption: \u003cstrong\u003e1,000W \/ 8.7A\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCord length: \u003cstrong\u003e20 ft\u003c\/strong\u003e (standard 115V model)\u003c\/li\u003e\n\u003cli\u003eRequires a properly grounded \u003cstrong\u003eGFCI-protected 120V outlet\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSize the GFCI circuit for the 8.7A draw (a standard 15A or 20A GFCI circuit is appropriate)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePlumbing:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDischarge: \u003cstrong\u003e2” FPT (female threaded)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eConnect using a 2” male NPT (MPT) adapter to standard 2” Schedule 40 PVC or flexible PVC pipe\u003c\/li\u003e\n\u003cli\u003eAdd a 2” check valve on the discharge line to prevent backflow into the vault when the pump shuts off\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I maintain the 50PN2.75S for maximum lifespan?\u003c\/summary\u003e\n\u003cdiv class=\"fb\"\u003e\n\u003cp\u003eThe Tsurumi 50PN2.75S is a low-maintenance, continuous-duty pump, but these steps will maximize service life:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntake strainer:\u003c\/strong\u003e Inspect monthly and rinse as needed. Debris buildup on the strainer restricts flow and increases motor load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWinterization:\u003c\/strong\u003e In climates with sustained freezing temperatures, remove the pump from the water and store indoors to prevent ice damage to the FRP casing and mechanical seals. Store in a bucket of water to keep seals moist.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal protector resets:\u003c\/strong\u003e If the pump shuts down unexpectedly, check for debris obstruction before restarting. Allow to cool for 5-10 minutes before reset.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnnual inspection:\u003c\/strong\u003e In hard-water areas, inspect the impeller annually for calcium scale. Clean with a dilute vinegar solution if needed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow does the 50PN2.75S compare to the 50PN2.25S?\u003c\/summary\u003e\n\u003cdiv class=\"fb\"\u003e\n\u003cp\u003eBoth models are in Tsurumi’s PN Series and share the same construction technology (semi-vortex FRP impeller, SiC mechanical seal, Oil Lifter, 304 stainless housing). The key differences are flow rate and power:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e50PN2.25S (smaller):\u003c\/strong\u003e Lower GPH and HP — suited for medium ponds and smaller waterfall features\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e50PN2.75S \/ 8PN (this pump):\u003c\/strong\u003e 5,520 GPH | 1 HP | 56 ft max head | 1,000W — for large ponds, tall waterfalls, and demanding continuous-duty installations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf your installation has a head of 20 ft or less or a moderate flow requirement, the 50PN2.25S may provide a better energy-to-flow ratio. For installations with 27+ ft of head or where maximum flow at elevation is needed, the 50PN2.75S is the recommended choice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs the 50PN2.75S compatible with Aquascape skimmer systems?\u003c\/summary\u003e\n\u003cdiv class=\"fb\"\u003e\n\u003cp\u003eYes. The Tsurumi 50PN2.75S (8PN) is one of the most widely used pumps in Aquascape skimmer and waterfall filter systems. Aquascape sells this pump under their own SKU (\u003cstrong\u003eAquascape SKU 29495\u003c\/strong\u003e, labeled “8PN”) as a direct-fit recommendation for their larger Signature Series skimmers and BioFalls filters.\u003c\/p\u003e\n\u003cp\u003eThe vertical orientation of the PN Series housing is specifically well-suited to the tight chamber dimensions of Aquascape and similar skimmer designs. The 2” FPT discharge aligns with standard 2” skimmer plumbing outlets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat warranty does the Tsurumi 50PN2.75S carry?\u003c\/summary\u003e\n\u003cdiv class=\"fb\"\u003e\n\u003cp\u003eThe Tsurumi 50PN2.75S carries a \u003cstrong\u003e2-Year Limited Warranty\u003c\/strong\u003e from date of purchase. The pump is also \u003cstrong\u003eUL \u0026amp; CSA certified\u003c\/strong\u003e, meeting safety standards for both residential and commercial applications.\u003c\/p\u003e\n\u003cp\u003eFor warranty service on authentic Tsurumi products, contact Pond Pro Direct at \u003ca href=\"tel:7655084352\"\u003e(765) 508-4352\u003c\/a\u003e. Retain proof of purchase for warranty claims.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003ch2\u003eWhy Buy from Pond Pro Direct?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuthentic Tsurumi products\u003c\/strong\u003e — full 2-year warranty supported on genuine pumps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContractor and professional expertise\u003c\/strong\u003e — Mon–Fri 9AM–5PM EST for sizing and system design guidance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrice Match\u003c\/strong\u003e — we will beat lower prices from authorized retailers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast U.S. shipping\u003c\/strong\u003e from trusted distribution partners\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"cta\"\u003e\n\u003cp\u003eTsurumi 50PN2.75S (8PN) — 5,520 GPH | 56 ft max head | 1 HP | 1,000W \/ 8.7A | 2” FPT | 20 ft cord | 0.4” solids | Dual SiC seal | Oil Lifter | 304 SS | FRP | Continuous duty | UL \u0026amp; CSA certified | 2-year warranty.\u003c\/p\u003e\n\u003cp\u003eQuestions about sizing for your specific head height or skimmer compatibility? Call or text \u003ca href=\"tel:7655084352\"\u003e(765) 508-4352\u003c\/a\u003e — Monday through Friday, 9 AM to 5 PM EST.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp class=\"disc\"\u003eNot approved for use in swimming pools or salt water. Must be connected to a properly grounded GFCI-protected 120V outlet. Submersible operation only.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cfms-fly-app data-fms-version=\"3.7.10\" id=\"fly-msg-app\"\u003e\u003c\/fms-fly-app\u003e\u003c\/p\u003e\n\u003cdiv class=\"wsc-contextmenu wsc-element wsc-theme-custom wsc--hidden wsc--border-box\"\u003e\n\u003cul class=\"wsc-list wsc-contextmenu__list\" id=\"\" role=\"tree\" aria-label=\"Suggestion popup\"\u003e\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wsc-assistant-badge wsc-element wsc-theme-custom wsc--hidden wsc--border-box\"\u003e\u003cbutton class=\"wsc-button wsc-button--clear wsc--focusable wsc-assistantbadge__assistant-dialog-button wsc-assistantbadge__button\" type=\"button\" role=\"button\" title=\"AI writing assistant\" aria-label=\"AI writing assistant\" aria-disabled=\"false\" tabindex=\"-1\"\u003e \u003cspan class=\"wsc-icon wsc-icon-assistantDialog wsc-assistantbadge__assistant-dialog-icon wsc-button__icon\"\u003e\u003c\/span\u003e \u003cspan class=\"wsc-button__text\"\u003e\u003c\/span\u003e\u003c\/button\u003e\u003c\/div\u003e","brand":"Tsurumi","offers":[{"title":"Default Title","offer_id":51120824844609,"sku":"68120","price":864.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0956\/6919\/0977\/files\/68120.jpg?v=1765554913"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0956\/6919\/0977\/collections\/tsurumi-logo.jpg?v=1767561354","url":"https:\/\/pondprodirect.com\/collections\/tsurumi-pond-water-feature-pumps.oembed","provider":"Pond Pro Direct","version":"1.0","type":"link"}