{"title":"Pentair Dynamo Above Ground Pump Replacement Parts","description":"\u003cp\u003ePentair Dynamo Above Ground Pump parts, matched to the diagram. Click any number on the exploded view to see the part, price and stock. Leaking pump? It is usually the shaft seal or an o-ring. Losing prime? Start with the lid o-ring. Not sure what you have? Call us or bring the part into any of our Phoenix, Scottsdale, Chandler or Las Vegas stores and we'll match it.\u003c\/p\u003e","products":[{"product_id":"pentairmultiportvalvedrainplugworingu178920pzpenu178920pz","title":"Pentair Multiport Valve Drain Plug w\/ O-Ring | U178-920PZ","description":"\u003cdiv\u003e\n\u003ch1\u003ePentair Multiport Valve Drain Plug with O‑Ring | U178‑920PZ\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003ePentair U178‑920PZ Multiport Valve Drain Plug\u003c\/strong\u003e is a genuine OEM replacement designed for use with Pentair multiport valves. Equipped with a durable O‑ring seal, this drain plug ensures a water-tight fit inside the valve’s drain port, allowing for easy drainage during winterizing or maintenance without leaks.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine Pentair Part:\u003c\/strong\u003e Ensures compatibility and long-lasting performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure O‑Ring Seal:\u003c\/strong\u003e Prevents leaks and ensures a tight fit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy Drainage:\u003c\/strong\u003e Allows simple removal for draining and reinstallation when refilling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Made from chemical‑resistant polymer for reliability in pool environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e U178‑920PZ\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComponent:\u003c\/strong\u003e Drain plug with integrated O‑ring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High‑quality, corrosion‑resistant plastic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Fits Pentair multiport valves for cartridge and D.E. filter systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eKeep your Pentair multiport valve sealed and leak-free during both operation and winterization with the \u003cstrong\u003eU178‑920PZ Multiport Valve Drain Plug with O‑Ring\u003c\/strong\u003e. A simple, reliable solution for proper pool maintenance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003eSKU: U178-920PZ\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":51576143905084,"sku":"U178-920PZ","price":8.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/pentair-multiport-valve-drain-plug-w-o-ring-u178-920pz-pentair-744404.jpg?v=1750391776"},{"product_id":"pentairchallengersuperflovspumpshaftsealset354545spen354545s","title":"Pentair Challenger SuperFlo VS Pump Shaft Seal Set | 354545S","description":"\u003cdiv\u003e\n\u003ch1\u003ePentair 354545S Mechanical Shaft Seal Assembly – 5\/8″ Shaft\u003c\/h1\u003e\n\u003cp\u003ePart # 354545S — a genuine Pentair mechanical shaft seal designed for pool and spa pumps using a 5\/8″ motor shaft. This seal restores the watertight barrier between the pump motor and the wet end, preventing leakage, maintaining prime, and protecting the motor from moisture damage.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eEngineered for pumps requiring a 5\/8″ (0.625″) shaft mechanical seal.\u003c\/li\u003e\n\u003cli\u003eIncludes both the rotating mechanical face and stationary ceramic seat.\u003c\/li\u003e\n\u003cli\u003eConstructed from durable, chemical-resistant materials suitable for harsh pool water environments.\u003c\/li\u003e\n\u003cli\u003eDirect replacement for many Pentair and Sta-Rite pumps, including Challenger High Flow, Challenger High Pressure, SuperFlo, SuperFlo VS, OptiFlo, Dynamo, Pinnacle, and others using this shaft size.\u003c\/li\u003e\n\u003cli\u003eRestores proper sealing to prevent leaks and extend pump service life.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTypical Applications\u003c\/h2\u003e\n\u003cp\u003eThis seal is used when a pump begins leaking at the shaft area, loses prime, draws air, or when performing routine pump service. It is ideal for both residential and commercial pool systems that require a 5\/8″ mechanical shaft seal replacement.\u003c\/p\u003e\n\u003ch2\u003eInstallation \u0026amp; Compatibility Notes\u003c\/h2\u003e\n\u003cp\u003eTurn off all power to the pump and relieve pressure before servicing. Remove the pump housing and impeller to access the old seal. Clean the shaft, impeller hub, and seal seat thoroughly. Install the new 354545S seal components in the correct orientation—ceramic seat in the housing, carbon face on the impeller. Reassemble the pump, prime the system, and inspect for leaks after startup.\u003c\/p\u003e\n\u003ch2\u003eWhy Choose This Seal Assembly?\u003c\/h2\u003e\n\u003cp\u003eThis genuine Pentair seal provides the proper fit, material quality, and reliability needed to maintain pump performance. Using the correct OEM-spec seal helps prevent water intrusion into the motor, reduces downtime, and extends the overall life of the pump.\u003c\/p\u003e\n\u003ch2\u003eMaintenance Tips\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInspect the seal area regularly for moisture or mineral deposits—early signs of seal wear.\u003c\/li\u003e\n\u003cli\u003eEnsure the motor shaft sleeve is smooth and free from corrosion before installing a new seal.\u003c\/li\u003e\n\u003cli\u003eUse only silicone-based lubricant on O-rings; do not lubricate the seal faces.\u003c\/li\u003e\n\u003cli\u003eDrain the pump during winterizing to prevent freeze damage to the seal assembly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":52335985754428,"sku":"354545S","price":24.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/pentair-challenger-superflo-vs-pump-shaft-seal-set-354545s-pump-parts-8462423.jpg?v=1764112872"},{"product_id":"pentaircvrmtrwonoffswitchpen350444","title":"PENTAIR COVER MOTOR W\/ON\/OFF SWITCH 350444","description":"\u003cdiv\u003e\n  \u003ch2\u003ePentair 350444 On\/Off Motor Switch Assembly (Canopy Switch) for Sta-Rite Dynamo Pumps\u003c\/h2\u003e\n\n  \u003cp\u003e\n    The Pentair 350444 is an OEM on\/off motor switch assembly (often called the canopy switch) used on select Pentair Sta-Rite Dynamo\n    aboveground pool pumps. It replaces the external on\/off switch assembly on the motor canopy, restoring reliable manual power control.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eCommon Compatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUsed on:\u003c\/strong\u003e Pentair Sta-Rite \u003cstrong\u003eDynamo\u003c\/strong\u003e aboveground pool pumps\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eManufacture date note:\u003c\/strong\u003e Commonly specified for Dynamo pumps manufactured \u003cstrong\u003ebefore 04\/2013\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003e\n    Verify fit by matching your pump model and checking your parts diagram or the existing switch style on the motor canopy.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eWhat This Part Does\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eProvides a manual \u003cstrong\u003eON\/OFF\u003c\/strong\u003e switch at the pump motor\u003c\/li\u003e\n    \u003cli\u003eRestores safe, consistent switching when the original switch is worn or damaged\u003c\/li\u003e\n    \u003cli\u003eHelps prevent intermittent operation caused by a failing external switch\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhen to Replace\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eSwitch will not turn on\/off reliably\u003c\/li\u003e\n    \u003cli\u003eIntermittent pump operation when the timer\/automation and power supply are confirmed good\u003c\/li\u003e\n    \u003cli\u003eCracked switch housing, broken actuator, or water intrusion at the switch\u003c\/li\u003e\n    \u003cli\u003eBurnt smell or heat discoloration at the switch terminals\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eTurn off power at the breaker and verify power is off before servicing.\u003c\/li\u003e\n    \u003cli\u003eTake a photo of existing wire connections before removal.\u003c\/li\u003e\n    \u003cli\u003eInspect wire terminals for corrosion\/overheating and repair any damaged connectors.\u003c\/li\u003e\n    \u003cli\u003eEnsure the switch and canopy area are properly sealed to reduce moisture intrusion.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhat’s Included\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eOn\/Off motor switch assembly (canopy switch)\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%20Dynamo%20seal%20kit\"\u003eSta-Rite Dynamo Seal \u0026amp; Gasket Kits (Search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=Sta-Rite%20Dynamo%20lid%20o-ring\"\u003eSta-Rite Dynamo Lid O-Ring (Search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=Sta-Rite%20Dynamo%20impeller\"\u003eSta-Rite Dynamo Impeller (Search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=Sta-Rite%20Dynamo%20diffuser\"\u003eSta-Rite Dynamo Diffuser (Search)\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eMaintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eKeep the equipment pad dry and protect the motor area from sprinkler spray to reduce switch and motor corrosion.\u003c\/li\u003e\n    \u003cli\u003eIf you see repeated electrical issues, confirm proper bonding\/grounding and stable supply voltage.\u003c\/li\u003e\n    \u003cli\u003eAddress wet-end leaks promptly—persistent moisture around the pump can shorten the life of electrical components.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":52589949911356,"sku":"350444","price":49.99,"currency_code":"USD","in_stock":true}]}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/collections\/pentair-dynamo-exploded-view.png?v=1790356419","url":"https:\/\/aquapoolsupply.com\/collections\/parts-list-pentair-dynamo.oembed","provider":"Aqua Pool Supply","version":"1.0","type":"link"}