{"product_id":"pentairstaritesystem3decartridgefilter72sf250230172spen250230172s","title":"Pentair Sta-Rite System 3 DE Cartridge Filter 72 sf | 25023-0172S","description":"\u003cdiv\u003e\n  \u003ch2\u003ePentair \/ Sta-Rite 25023-0172S System:3 SMD Modular D.E. Filter Module (72 Sq Ft)\u003c\/h2\u003e\n\n  \u003cp\u003e\n    The Pentair \/ Sta-Rite \u003cstrong\u003e25023-0172S\u003c\/strong\u003e is an OEM replacement \u003cstrong\u003emodular D.E. filter module (cartridge\/grid element)\u003c\/strong\u003e\n    for Sta-Rite \u003cstrong\u003eSystem:3 SMD-series\u003c\/strong\u003e modular D.E. filters. This is the internal filtration element that holds D.E. powder and\n    provides fine filtration performance. Replacing a worn or damaged module restores normal flow, pressure, and water clarity.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eCompatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Sta-Rite System:3 SMD-series modular D.E. filters\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCommon filter model:\u003c\/strong\u003e \u003cstrong\u003eS7MD72\u003c\/strong\u003e (72 sq ft System:3 modular D.E.)\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003e\n    Confirm your filter model number on the tank label\/parts diagram before ordering to ensure you need the \u003cstrong\u003e72 sq ft\u003c\/strong\u003e module.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eKey Specs\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFiltration area:\u003c\/strong\u003e 72 sq ft\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Modular D.E. filter element \/ module\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eApprox. dimensions:\u003c\/strong\u003e 17-1\/4\" x 17-1\/4\" x 28\" (L x W x H)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOEM part:\u003c\/strong\u003e Pentair \/ Sta-Rite original replacement\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhat This Module Does\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eProvides the surface area that carries D.E. powder for fine filtration\u003c\/li\u003e\n    \u003cli\u003eHelps maintain strong flow and normal system pressure when clean and properly charged with D.E.\u003c\/li\u003e\n    \u003cli\u003eRestores filtration performance when the old module is torn, brittle, or permanently clogged\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhen to Replace\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eTears, splits, cracks, or worn areas in the fabric\/structure\u003c\/li\u003e\n    \u003cli\u003eD.E. returning to the pool after recharging (after ruling out valve\/manifold issues)\u003c\/li\u003e\n    \u003cli\u003eChronic high pressure that does not improve after thorough cleaning\u003c\/li\u003e\n    \u003cli\u003eModule is deformed, brittle, or damaged from age, chemical exposure, or overheating\/run-dry events\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eShut off the pump and \u003cstrong\u003erelieve all pressure\u003c\/strong\u003e from the filter before opening the tank.\u003c\/li\u003e\n    \u003cli\u003eRemove the old module and clean the inside of the tank, air bleed passages, and sealing surfaces.\u003c\/li\u003e\n    \u003cli\u003eInspect the tank O-ring and replace if flattened, cracked, swollen, or nicked; lubricate lightly with pool-safe silicone lubricant.\u003c\/li\u003e\n    \u003cli\u003eReassemble the tank and start the system, then \u003cstrong\u003erecharge with the correct D.E. amount\u003c\/strong\u003e for your filter (follow the tank label\/manual).\u003c\/li\u003e\n    \u003cli\u003eRecord the clean starting pressure after installation for a baseline reference.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eCleaning \u0026amp; Care Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eRinse the module thoroughly during cleanings to remove debris and spent D.E.\u003c\/li\u003e\n    \u003cli\u003ePeriodically use a proper filter cleaner to remove oils\/scale that can permanently restrict flow.\u003c\/li\u003e\n    \u003cli\u003eRecharge with the correct D.E. amount after each backwash\/cleaning to maintain filtration and protect the element.\u003c\/li\u003e\n    \u003cli\u003eNever run the system without proper prime—overheating can damage the module and internal seals.\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=25023-0172S\"\u003e25023-0172S (Search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=System%203%20SMD%20tank%20o-ring\"\u003eSystem:3 SMD Tank O-Ring \/ Seal (Search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=System%203%20SMD%20air%20relief\"\u003eSystem:3 SMD Air Relief \/ Pressure Parts (Search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=DE%20filter%20powder\"\u003eD.E. Filter Powder (Search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=filter%20cleaner%20de%20element\"\u003eD.E. Filter Element Cleaner (Search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=pool%20silicone%20lubricant\"\u003ePool-Safe Silicone O-Ring Lubricant (Search)\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eMaintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eClean when pressure rises about 8–10 PSI over your clean baseline (or per your service standard).\u003c\/li\u003e\n    \u003cli\u003eKeep the tank O-ring clean and lightly lubricated to prevent pinching and leaks.\u003c\/li\u003e\n    \u003cli\u003eIf you see repeated D.E. blowback to the pool, inspect internal manifolds, air bleed parts, and valve components.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":52589949387068,"sku":"25023-0172S","price":799.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/pentair-sta-rite-system-3-de-cartridge-filter-72-sf-25023-0172s-cartridges-3672926.jpg?v=1771677734","url":"https:\/\/aquapoolsupply.com\/products\/pentairstaritesystem3decartridgefilter72sf250230172spen250230172s","provider":"Aqua Pool Supply","version":"1.0","type":"link"}