{"product_id":"pentairdseriescastironselfprimingcentrifugalcommercialpump5hp230460vthreephasedmj3172pendmj3172","title":"Pentair D-Series Cast Iron Self-Priming Centrifugal Commercial Pump, 5 HP, 230\/460 V, Three Phase | DMJ3-172","description":"\u003cdiv\u003e\n  \u003ch2\u003ePentair \/ Sta-Rite DMJ3-172 D-Series Commercial Pool Pump (5 HP, 3-Phase, 230\/460V, Medium Head)\u003c\/h2\u003e\n\n  \u003cp\u003e\n    The Pentair \/ Sta-Rite DMJ3-172 is a heavy-duty, self-priming centrifugal pump from the Sta-Rite D-Series line, built for\n    commercial pool circulation where high flow, reliable priming, and serviceability matter. This model is a\n    \u003cstrong\u003e5 HP, 3-phase\u003c\/strong\u003e pump commonly used on larger pools, water features, and commercial filtration systems that require\n    a rugged cast-iron wet end and stable medium-head performance.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eKey Specifications\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e DMJ3-172\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e Sta-Rite D-Series (Medium Head)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHorsepower:\u003c\/strong\u003e 5 HP\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePhase:\u003c\/strong\u003e 3-Phase\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 230\/460V (3-phase)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePort Size (NPT):\u003c\/strong\u003e 2-1\/2\"\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSuction Connection:\u003c\/strong\u003e Uses a separate suction flange to match your plumbing size (sold separately)\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eConstruction \u0026amp; Design Features\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRugged wet end:\u003c\/strong\u003e Cast iron body designed for commercial-duty operation\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBronze enclosed impeller:\u003c\/strong\u003e Built for durability and consistent hydraulic performance\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFast self-priming design:\u003c\/strong\u003e Helps restore prime quickly after basket cleaning or service\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBack pull-out service design:\u003c\/strong\u003e Motor and rotating assembly can be serviced without disturbing plumbing (in typical installations)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDrain port:\u003c\/strong\u003e Helps with winterizing and service draining\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eStrainer option:\u003c\/strong\u003e Can be paired with a compatible hair \u0026amp; lint strainer (sold separately) for debris protection and commercial compliance requirements\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eCommon Applications\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eCommercial pool filtration circulation\u003c\/li\u003e\n    \u003cli\u003eLarge residential pools requiring higher flow and durable construction\u003c\/li\u003e\n    \u003cli\u003eWater features and equipment pads where dependable priming and service access are priorities\u003c\/li\u003e\n    \u003cli\u003eSystems using commercial sand or cartridge filtration with higher hydraulic demand\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhat to Verify Before Ordering\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePower supply:\u003c\/strong\u003e Confirm 3-phase power is available and matches your facility voltage (230V or 460V)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePlumbing connections:\u003c\/strong\u003e Confirm your required suction flange size and discharge piping size before installation\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSpace\/clearance:\u003c\/strong\u003e Ensure room for service access (lid\/strainer access if installed, and motor pull-back clearance if applicable)\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eInstall on a solid, level equipment pad and follow proper bonding\/grounding practices per local code.\u003c\/li\u003e\n    \u003cli\u003eUse correct suction piping sizing and minimize suction restrictions to reduce cavitation and noise.\u003c\/li\u003e\n    \u003cli\u003eIf adding a hair \u0026amp; lint strainer, ensure it is sized correctly and oriented for easy basket access.\u003c\/li\u003e\n    \u003cli\u003eAfter startup, verify prime, check for leaks, and confirm stable operating pressure\/flow.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation and Maintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eKeep suction-side valves fully open and baskets clean to reduce cavitation and protect the impeller and seal.\u003c\/li\u003e\n    \u003cli\u003eAddress small drips early—mechanical seal leaks can lead to motor damage if ignored.\u003c\/li\u003e\n    \u003cli\u003eRecheck fasteners and flange\/union connections after initial run-in as gaskets seat.\u003c\/li\u003e\n    \u003cli\u003eDuring seasonal shutdown, drain the pump and protect it from freeze conditions.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eRelated Products (Aqua Pool Supply)\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=Sta-Rite%20D%20Series%20hair%20and%20lint%20strainer\"\u003eSta-Rite D-Series hair \u0026amp; lint strainers\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=Sta-Rite%20D%20Series%20suction%20flange\"\u003eSta-Rite D-Series suction flanges\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=Sta-Rite%20D%20Series%20mechanical%20seal\"\u003eSta-Rite D-Series mechanical shaft seals\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=Sta-Rite%20D%20Series%20gasket%20o-ring\"\u003eSta-Rite D-Series gaskets and O-rings\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=commercial%20pool%20pump%20check%20valve\"\u003eCommercial pump check valves\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n","brand":"Pentair","offers":[{"title":"Default Title","offer_id":52589965738300,"sku":"DMJ3-172","price":2199.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/pentair-d-series-cast-iron-self-priming-centrifugal-commercial-pump-5-hp-230460-v-three-phase-dmj3-172-pool-pumps-1370128.jpg?v=1770213924","url":"https:\/\/aquapoolsupply.com\/products\/pentairdseriescastironselfprimingcentrifugalcommercialpump5hp230460vthreephasedmj3172pendmj3172","provider":"Aqua Pool Supply","version":"1.0","type":"link"}