{"title":"Sta-Rite System 3 Filter Parts","description":"\u003cp\u003eReplacement parts for Sta-Rite System 3 Filter, genuine OEM and compatible aftermarket.\u003c\/p\u003e","products":[{"product_id":"pentair-170145-starite-s7m120-large-and-small-cartridge-250210200s-250220201s","title":"Sta-Rite 170145 System 3 S7M120 Large and Small Cartridge Set, 25021-0200S and 25022-0201S","description":"\u003cp\u003ePentair 170145 is the genuine replacement cartridge pack for the Sta-Rite System 3 S7M120, the 21 in. modular media filter. It contains both elements the filter uses: the 25021-0200S inner cartridge and the 25022-0201S outer cartridge.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTwo cartridges that work as one\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe System 3 nests a smaller cartridge inside a larger one. The inner element measures 11 in. by 11 in. by 31.25 in. and the outer 19 in. by 19 in. by 23 in. Together they give the filter its full surface area, which is why replacing only one of them rarely brings performance back.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eCartridges are cleaned many times over their life, but eventually hosing no longer returns the pressure gauge to its clean reading, and pleats start to fray or collapse. That is the point to fit a new pack rather than keep cleaning.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBefore you order\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis pack fits the S7M120 only. The S8M150, S7M400 and S8M500 in the same family take different cartridges. The model is on the tank label.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48620697419988,"sku":"STA-051-6578","price":464.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_f157c2cb-828b-49b3-a55b-ba75c7ec9a62.png?v=1788573177"},{"product_id":"sta-rite-s7d75-full-filter-grid-set-11-grids","title":"Filbur Sta-Rite S7D75 Full Filter Grid Set (11 Grids), FS-3037","description":"\u003cp\u003eThe Filbur FS-3037 is a full eleven grid replacement set for the Sta-Rite System 3 S7D75 DE filter. It is grids only: the manifold, retainer and hardware from your existing element stay in service, and the new grids go on in place of the old ones.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is in the set\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThree offset port grids, one at 12-7\/16 in. and two at 13-13\/16 in., and eight center port grids, two each at 9-11\/16, 12-7\/16, 15-3\/16 and 16-1\/2 in. Every grid is 18 in. long. Together they replace the complete grid pack in the S7D75 tank.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBefore you order\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eConfirm the filter is the S7D75. The larger System 3 S8D110 takes a thirteen grid set instead. While the tank is apart it is worth checking the 21 in. tank o-ring and replacing it if it has flattened or cracked.\u003c\/p\u003e","brand":"Unicel Filter Cartridges","offers":[{"title":"Default Title","offer_id":48624884089044,"sku":"UNI-051-3037","price":245.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_8220d387-d4e7-40d8-a0cf-4184331eeb8a.jpg?v=1788649564"},{"product_id":"pentair-starite-s8m150-large-and-small-cartridge-filter-pack-250210202s-250220203s","title":"Pentair Sta-Rite S8M150 Large and Small Cartridge Filter Pack 25021-0202S \u0026 25022-0203S, 170147","description":"\u003cp\u003eThe Pentair 170147 is the complete replacement cartridge pack for the Sta-Rite System:3 S8M150 modular media filter. It pairs the large outer cartridge, 25022-0203S, with the small inner cartridge, 25021-0202S, so one order refreshes the whole filter.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMade for the S8M150\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe S8M150 is the 259 sq ft System:3 filter. Its two cartridges nest inside one another, and this pack supplies both in the correct sizes.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eCartridges are cleaned many times before they are done, but eventually a hose down no longer brings the starting pressure back to where it was, or the pleats tear and collapse. That is the point to fit a new set. Because the two cartridges age together, most owners replace both at once.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBefore you order\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eConfirm your filter is the S8M150. While the tank is open, check the tank o-ring, the drain plug and the air bleeder so you only open it once.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48624921575636,"sku":"STA-051-6580","price":767.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_48e6df7d-2526-4b3c-a347-09d28e76fa41.png?v=1788653576"},{"product_id":"300-sqft-filter-replacement-mod-media","title":"Sta-Rite 300 Sq. Ft. Filter Replacement MOD Media, 27002-0300S","description":"\u003cp\u003eThe Sta-Rite 27002-0300S is the 300 square foot replacement modular media module for the System 2 PLM300 cartridge filter. Sta-Rite calls it MOD media: instead of several loose cartridges, the PLM filter runs a single modular element, and this is the genuine replacement for it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eModular media is cleaned, not backwashed. Over time the cleanings stop restoring flow, the starting pressure creeps up, and eventually the pleats or bands give out. When that happens a new module puts the filter back to its rated 300 square feet and the pressure back to where it started.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFit\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis module is for the PLM300 only. The smaller filters in the System 2 range, PLM100 through PLM200, use their own modules, so match the size stamped on your tank before ordering. Replacement is a matter of opening the tank, lifting out the old module and setting the new one in place.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48624922001620,"sku":"STA-06-290","price":569.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_f7060780-64fd-46dc-89f5-918acfa43e55.jpg?v=1788653592"},{"product_id":"tank-shell-upper-half-black","title":"Sta-Rite System 2 Tank Shell Upper Half, Black, 27001-0020S","description":"\u003cp\u003eThe Sta-Rite 27001-0020S is the black upper half of the tank on System 2 modular media filters. It is the genuine Sta-Rite shell, sold on its own so a cracked or damaged top can be replaced without buying a new filter.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich filters\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt is listed for the System 2 PLM100 and PLM150 and appears on the Sta-Rite parts diagrams for the PLM125, PLM175, PLM200 and PLM300 cartridge filters, the PLD cartridge filters and the PLDE36 and PLDE48 DE filters. It is also cross listed for the AquaTools AT84100 and AT84150 permanent media filters and the AT8230 to AT8236 DE filters.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is not included\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis is the upper shell only. The lower tank half, the position lock ring, the safety latch for the ring and the spring check valve are separate parts. Order them alongside if yours are worn.\u003c\/p\u003e\u003cp\u003eThe top and bottom photos show the shell from both sides so you can compare it against the tank on your pad before ordering.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48624928162004,"sku":"STA-051-2579","price":287.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_3620c1a3-fda3-4c7e-80a4-eded85450841.png?v=1788654833"},{"product_id":"d-e-module-60-sqft-s7md60","title":"Sta-Rite DE Filter Module 60 sqft S7MD60, 25023-0160S","description":"\u003cp\u003eThe Sta-Rite 25023-0160S is the genuine 60 sq ft DE filter module for the System 3 S7MD60 modular DE filter. The System 3 uses a single module in place of the usual set of separate grids, so this one part replaces the entire filtering element.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDE showing up back in the pool, pressure that rises fast after a fresh charge, or tears, cracks or a collapsed section on inspection all mean the module is done. Cleaning will not recover a torn module.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitting\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDrain the tank, remove the old module, check the tank o-ring and seat the new module. Reassemble, restart the pump and add the DE charge for the S7MD60 through the skimmer.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48624959946964,"sku":"STA-06-276","price":605.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_a301f4db-cde1-431b-b44a-9107563a47d7.jpg?v=1788656606"},{"product_id":"valve-gauge-assembly","title":"Sta-Rite Valve and Gauge Assembly for System 3 Filters, 24850-0105","description":"\u003cp\u003eThe Sta-Rite 24850-0105 is the air relief valve and pressure gauge assembly for System 3 filters. It is the genuine Pentair part and comes as a complete kit: the pressure gauge, the tee, a 1\/4 in. nipple, an adapter bushing and the o-ring.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe gauge is how you read the filter. Clean pressure tells you the baseline, and a rise of several psi tells you it is time to clean the cartridges, backwash the DE or the sand. The valve above it bleeds the air that collects at the top of the tank after a cartridge clean or when the pump is primed. A gauge stuck at zero, a cracked lens or a valve that will not seal are the reasons this assembly gets replaced.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFit\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt fits across the System 3 line: the SM series modular media cartridge filters S7M120, S7M400, S8M150 and S8M500, the SD series DE filters S7D75 and S8D110, and the SS series sand filter S8S70. The internal air bleed assembly is a separate part.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48624992714964,"sku":"STA-051-2592","price":110.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_b49f63bc-36d6-4e45-afdf-4ab7cb15e68d.png?v=1788661501"},{"product_id":"21-filter-tank-o-ring","title":"Sta-Rite 21 in. Filter Tank O-Ring, System 3, 24850-0008Z","description":"\u003cp\u003eThe Sta-Rite 24850-0008Z is the tank o-ring for System 3 filters with the 21 in. tank. It is a Pentair part, and it fits the S7S50 and S8S70 sand filters among others in the System 3 family built on that tank.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCheck your tank size first\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSystem 3 filters come in more than one tank size. The 25 in. tank, used on the S8D110, takes a different o-ring. If you are not sure which you have, measure across the tank at the seam.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitting\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eClean the groove, lightly lubricate the new ring with a silicone o-ring lubricant, seat it and bring the tank halves together evenly. A drip at the seam after reassembly usually means the ring was pinched or the groove was not clean.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48624998514900,"sku":"STA-051-2809","price":70.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_a545f93e-f2b5-4f27-a56d-43c1e06ff4ec.jpg?v=1788661784"},{"product_id":"sand-filter-drain-cap","title":"Pentair Genuine OEM Sand Filter Drain Cap, 154712","description":"\u003cp\u003eThe Pentair 154712 is the drain cap for a family of top mount sand filters sold under three names: the Sta-Rite Cristal-Flo II, the Pentair Sand Dollar, and the American Products Eclipse and Meteor. It is the genuine Pentair part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe cap closes the drain port at the bottom of the tank. With it in place the filter holds pressure; with it off, the tank empties. That makes it the part you handle at every winterizing and every sand change, and the one most likely to be cracked or misplaced by the time spring comes around.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBefore you order\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eConfirm your filter is one of the models listed. Sta-Rite and Pentair are the same company, so a Cristal-Flo II owner ordering a Pentair numbered cap is getting the right part.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48625020633300,"sku":"PAC-051-0056","price":33.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_72409409-4a1d-4038-9451-9bfc2c067364.jpg?v=1788662338"},{"product_id":"bleeder-valve-tee-assembly","title":"Pentair Genuine OEM Triton II Air Relief Tee Assembly, 154689Z","description":"\u003cp\u003eThe Pentair 154689Z is the air relief tee assembly for Triton II sand filters: the plastic tee that mounts on top of the tank and the bleeder valve that threads into it, supplied together as one genuine Pentair part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAir collects at the top of a filter tank every time the system is opened or drained. Left there, it takes up space the water should fill, raises pressure and can spit air back to the pool. Opening the bleeder valve on this tee lets that air out so the tank fills properly and the gauge reads true.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich filters\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe Triton II TR40, TR50, TR60, TR100 and TR140, the Pentair PF stainless steel side mount sand filter, the Mitra stainless and Mytilus B fiberglass cartridge filters, and the Sta-Rite System 3 DE filters S7D75 and S8D110 along with the System 3 SMD modular series.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBefore you order\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis assembly does not include a pressure gauge. If only the valve or its o-ring has failed and the tee is intact, those are available separately; this listing replaces the whole assembly.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48625020928212,"sku":"PAC-051-2849","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_3a03d2d8-c994-4cdd-9e13-5eb82ec3c3e6.jpg?v=1788662370"},{"product_id":"stand-pipe-assembly-sd60","title":"Pentair Genuine OEM Stand Pipe Assembly SD60, 152227","description":"\u003cp\u003eThe Pentair 152227 is the stand pipe assembly for the Sand Dollar SD60 above ground pool and spa sand filter, and for the Sta-Rite Cristal-Flo II high rate sand filter on the 22 in. tank. It is the genuine Pentair part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe stand pipe runs down the center of the tank and carries filtered water from the bottom of the sand bed back up to the valve. The laterals at its base collect that water while holding the sand back. When the pipe cracks or a lateral breaks, sand slips past and shows up in the pool through the return jets.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBefore you order\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eCheck the model on the filter label. The SD60 is the largest of the Sand Dollar tanks and the SD35 and SD40 use their own parts. Reaching the stand pipe means emptying the sand out of the tank, so plan on fresh media for the same visit.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48625586405588,"sku":"PAC-051-9301","price":128.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_7cd44efe-a216-4fd9-8a18-7292979014d9.png?v=1788689020"},{"product_id":"abs-6-posistion-valve-with-piping","title":"Sta-Rite ABS 6-Position Valve with Piping, 18201-0200","description":"\u003cp\u003eThe Sta-Rite 18201-0200 is the 2 in. ABS side mount multiport valve, supplied as a kit with its piping and union nuts. It is used on the Sta-Rite S7D75, S8D110, S7S50 and S8S70 filters.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat a multiport valve does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA multiport valve replaces a bank of separate valves with one handle. Six positions cover the routines a filter needs, so filtering, backwashing and rinsing are a matter of moving the lever rather than repiping anything.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eConstruction and fitting\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe body is molded ABS, which holds up to years of handle movement and weather at the equipment pad. Because the kit includes union nuts, the valve can be taken off later for service without cutting into the plumbing. Check that your filter is one of the four listed models before ordering, since top mount filters use a different valve.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48625710661844,"sku":"STA-06-273","price":343.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_f50aa539-e65a-4274-961c-5e409ba70f33.jpg?v=1788688903"},{"product_id":"position-lock-ring-modular-filter","title":"Sta-Rite Position Lock Ring, Modular Filter, 27001-0054S","description":"\u003cp\u003eThe Sta-Rite 27001-0054S is the position lock ring, also called the Posi-Lok ring, for System 2 modular media filters. It is the genuine Sta-Rite part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe filter tank is built as an upper and a lower half. The lock ring goes around the joint between them and holds the two together against the pressure inside. Everything the filter does depends on that ring staying intact.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe inside diameter is approximately 16 in. The inner lip, the part that grips the tank flange, is approximately 3\/4 in. thick. Sta-Rite used more than one ring size across the modular filter range, so compare those measurements with your old ring before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSun and years of clamping load make the plastic brittle. A ring that has cracked, split or lost its shape has to be replaced rather than coaxed back on, since it is the only thing keeping a pressurized tank closed.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48625721639124,"sku":"STA-051-2790","price":216.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_5f82a8e7-e099-4e75-bc9d-0cd65e10510a.png?v=1788689926"},{"product_id":"100-sqft-filter-replacement-module","title":"Sta-Rite 100 Sq. Ft. Filter Replacement Module for PLM100, 27002-0100S","description":"\u003cp\u003eThe Sta-Rite 27002-0100S is the 100 sq. ft. filter replacement module for the System 2 Modular Media filter, model PLM100. It is the original Sta-Rite replacement and carries the manufacturer number 24800-0121.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eA module, not a bare cartridge\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe System 2 filter uses a complete media module rather than a loose element, and the air bleed assembly comes fitted to it. That means the replacement drops in as one piece with nothing to transfer over from the old one.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe round section measures 13 in. in diameter and the module stands 18-3\/8 in. tall. The top opening is a figure 8 shape, 6-1\/4 in. by a maximum of 4-1\/2 in. Measure the old module if you are unsure which one you have.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMatching the filter\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis module is for the PLM100. The larger PLM150 takes the 150 sq. ft. module, which is a separate part, so check the model on the tank label before ordering.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48625722589396,"sku":"STA-05-246","price":291.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_8ed15d7a-0fac-41a7-9a7d-0677fa1ba5f0.png?v=1788690040"},{"product_id":"manifold-s8d110","title":"Sta-Rite Manifold for System 3 S8D110 DE Filter, 24801-0101","description":"\u003cp\u003eThe Sta-Rite 24801-0101 is the manifold for the System 3 SD series DE filter, model S8D110. It is the genuine factory part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eInside a DE filter, the grids stand in a frame and drain into a manifold. Filtered water collects there and leaves the tank through the outlet. If the manifold cracks, splits at a port or warps, the seal to the grids is lost, water bypasses the media, and DE powder shows up in the pool.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBefore you order\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eConfirm the label on the tank reads S8D110. Replacing the manifold means opening the tank and lifting the grid assembly out, so it is a good moment to inspect the grids and the tie rod at the same time.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48625724195028,"sku":"STA-051-2690","price":176.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_14b25fd0-9746-4423-b3c1-d7208cdb3069.jpg?v=1788690111"},{"product_id":"air-bleed-assembly","title":"Sta-Rite Air Bleed Assembly, 24800-0120","description":"\u003cp\u003eThe Sta-Rite 24800-0120 is the genuine air bleed assembly, the relief fitting that vents air trapped at the top of a filter tank.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy bleeding matters\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eEvery time a filter is opened, or the pump loses prime, air collects at the top of the tank. That air displaces water, so less of the media is actually doing work, and the pressure gauge reads something that does not reflect what is happening inside. Opening the air bleed until water runs steadily is what clears it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAir bleeds corrode in place and seize, and the stem frequently snaps when someone leans on one that has not moved in several seasons. A bleed that weeps continuously or will not close is worth replacing rather than working around.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere it appears\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSta-Rite lists this assembly across a broad set of filter diagrams, including the System 3 D.E. and SM cartridge models, the Posi-Flo TX and TR, the System 2 PLD and PLDE series, and the Sta-Rite PLD aboveground cartridge system. It also appears in Hayward® Super Star-Clear and SwimClear cartridge filter diagrams. Check your filter against its diagram before ordering.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48625746247892,"sku":"STA-051-2691","price":35.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_ab76d34c-d1b4-4f28-92b0-8c649d6b426c.png?v=1788690900"},{"product_id":"valve-body-o-ring","title":"Pentair Genuine OEM Valve Body O-Ring for Cristal-Flo II and Sand Dollar Filters, 272541","description":"\u003cp\u003eThe Pentair 272541 is the valve body o-ring listed for Sand Dollar and Tagelus top mount sand filters and the Sta-Rite Cristal-Flo II. It is the genuine Pentair part, molded in rubber and listed at 3\/16\" x 4-3\/4\".\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat an o-ring does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAn o-ring is a simple circle of rubber that sits in a groove and gets squeezed between two parts. That squeeze is the seal. As the rubber ages it hardens and takes the shape it has been held in, and once it stops springing back, the joint starts to weep.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere it goes\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis one seals the valve body on the filter systems listed above. It also appears in the PacFab 1-1\/2 in. multiport and 6 way Hi-Flo multiport valve parts diagrams, so check the diagram for your equipment against the part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWorth doing while you are in there\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eValve work is mostly disassembly time. When the valve is already apart, replacing the o-ring costs very little compared with taking it apart a second time a month later.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48625746772180,"sku":"PAC-051-8099","price":11.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_3be969f6-28fd-4855-b8fa-553f8bae8a73.png?v=1788691295"},{"product_id":"base-for-filter-and-pump","title":"Pentair Base for Filter and Pump, 155333P","description":"\u003cp\u003eThe Pentair 155333P is the systems base that carries the filter tank and the pump on several Pentair and Sta-Rite aboveground filter systems. It is the genuine Pentair part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003ePentair publishes two fitment lists for this base. One names the Meteor filter systems, the EasyClean DE system, the Sand Dollar filter systems and the Cristal-Flo II filter system. The other adds the PXC aboveground filter and Clean and Clear systems. Both are carried here rather than choosing between them, so check your system against each and against the base you are taking off.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat a base does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt is easy to dismiss the base as a plastic tray, but it is what holds the filter outlet and the pump inlet in fixed relation to each other. Once the base cracks and the system starts to rock, the short plumbing run between the two takes all of that movement, and the unions and fittings are what fail next.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eCracks around the mounting bosses, a base that flexes underfoot, or a system that no longer sits level are all reasons to change it. It is a straightforward swap once the pump and tank are unbolted.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48625748574420,"sku":"PAC-101-0021","price":100.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_08515e1e-c924-42c6-84aa-adf2a3f0049f.png?v=1788691558"},{"product_id":"elbow-and-bulkhead-assembly","title":"Sta-Rite System:3 Elbow and Bulkhead Assembly, 25021-0100Z","description":"\u003cp\u003eThis is the 25021-0100Z elbow and bulkhead assembly for the Sta-Rite System:3 Modular Media SM series filter. It is listed with the S7M120, S7M400, S8M150 and S8M500 models.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe bulkhead is the port through the filter tank wall, and the elbow turns the flow at that point. It is a joint that has to seal under pressure for years. When the assembly cracks, distorts or the sealing face is chewed up, the symptom is a weep or a drip at the tank that no amount of tightening cures.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCheck the model, not the media\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eOur source describes this part both as a Modular Media SM series D.E. filter part and as a System:3 SM cartridge filter part, for the same four model numbers. Rather than choosing between those readings, match your filter to the model numbers listed above. The bulkhead o-ring is a separate part, so inspect it while the assembly is out.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48625749131476,"sku":"STA-051-2951","price":105.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_1847f5a5-2b22-40ef-a2f9-597793d65282.gif?v=1788691661"},{"product_id":"21-lower-tank-half","title":"Sta-Rite 21\" System 3 Lower Tank Half, 24850-0102S","description":"\u003cp\u003eThis is the lower tank half for the 21 inch Sta-Rite System 3 filter, part number 24850-0102S. It is the bottom shell of the filter body, the piece that holds the internals and carries the plumbing connections.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich filters it fits\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSta-Rite used the same 21 inch tank across several System 3 models, so this half serves the modular SMD Series D.E. filter, the SD Series D.E. filter model S7D75, and the SS-Series sand filters S7S50 and S8S70. Confirm your model tag before ordering, since System 3 filters were also built in larger tank sizes.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen you need one\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA tank half is bought when the shell itself has failed: a crack, a split at the clamp band, or a leak that keeps coming back after a new o-ring and a careful clamp. Once the tank is compromised, no seal will hold it, and the shell has to be replaced.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat carries over\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe internals stay with your filter. Grids, the manifold, the drain plug and the plumbing all move into the new half. The tank o-ring that seals the two halves together is a separate item, and fitting a fresh one is standard practice any time the filter is split open.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48625785405652,"sku":"STA-101-2250","price":1113.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_305786d8-06ee-40d1-9c05-b3292a0aae3b.jpg?v=1788692355"},{"product_id":"pentair-152000-pipe-assembly-for-cristal-flo-ii-high-rate-sand-filter-24-inch-tank","title":"Pentair Cristal-Flo SD70 Standpipe Assembly, 152000","description":"\u003cp\u003eThe Pentair 152000 is the pipe assembly for the Cristal-Flo II high rate sand filter with a 24 inch tank, listed as the SD70 standpipe and also carried for the Sand Dollar top mount filter.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat the standpipe does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt is the vertical pipe that runs up the center of the tank. Water passes down through the sand bed, in through the laterals at the bottom, and back up the standpipe to the valve. Everything filtered by the tank goes through it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy it fails\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA cracked standpipe or a broken joint at the top lets water skip the sand bed entirely, and the first sign is usually sand blowing back into the pool. Because standpipes are sized to the tank, confirm you have the 24 inch Cristal-Flo II before ordering.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48625810931924,"sku":"PAC-051-1279","price":126.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_ecfa5810-0336-4a8f-b4bd-68964243eae9.jpg?v=1788700401"},{"product_id":"sta-rite-tank-upper-half-with-air-relief-valve-27001-0030s","title":"Sta-Rite Tank Upper Half with Air Relief Valve for System 2 PLM300, 27001-0030S","description":"\u003cp\u003eThe Sta-Rite 27001-0030S is the upper tank shell half for the System 2 PLM300, supplied with the air relief valve fitted. It is the genuine Sta-Rite part, sold under Pentair.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTop half only\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe tank is built as two shells that clamp together around the filter element. This listing is the upper half, the one that carries the air relief valve. The lower tank shell half is ordered separately, and the position lock ring is a separate part again.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCheck the label on your tank\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe PLM300 turns up both as a System 2 cartridge filter and as a System 2 modular media filter, so read the model badge on your own filter and match it to 27001-0030S before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA cracked shell, a split at the relief valve boss, or a top that will no longer pull down and seal are the usual reasons the upper half gets changed rather than resealed.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48625813455060,"sku":"STA-051-2068","price":469.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_725d7fda-208d-4e7d-be4f-20eb4633dc24.png?v=1788700449"},{"product_id":"air-bleeder-package-complete","title":"Pentair Genuine OEM Air Bleeder Package, Complete, 154687Z","description":"\u003cp\u003ePentair 154687Z is the complete air bleeder fitting package for Triton II and System 3 filters. It is the genuine Pentair part, supplied with the brass fitting.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat you get\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eFive pieces make up the package: the 154689 air bleeder and tee assembly, the 154700 adapter, the 154661 o-ring, the 154664 nut and the 154418 washer. Buying the complete package rather than chasing the individual numbers is usually the faster route when the old fitting has corroded into one piece.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003ePentair lists it for the Triton II pool and spa filter models TR50, TR60, TR140 and TR100, and for the System 3 SM, SD and SMD series models S7M120, S7M400, S8M150, S8M500, S7D75 and S8D110.\u003c\/p\u003e\u003cp\u003eThe air relief is the fitting you open on top of the filter to purge trapped air after cleaning a basket, opening the filter, or starting the system back up. Air that stays in the tank shows up as a high or unstable pressure reading and poor flow, so the relief needs to open and seal reliably rather than weep.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48625852121300,"sku":"PAC-051-2848","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_edabe488-4ec0-4ab1-b53c-073f9d5fddc7.png?v=1788701670"},{"product_id":"pentair-pressure-gauge-with-indicator-190059-190059z","title":"Pentair OEM Pressure Gauge with Indicator, 190059Z","description":"\u003cp\u003eThis is the genuine Pentair pressure gauge with indicator, listed under part numbers 190059 and 190059Z. It is the gauge Pentair uses across a wide part of its filter and valve range.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere it fits\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003ePentair lists it for the 6-Way HiFlow MultiPort Valve, the SM and SMBW 2000 and 4000 series filters, the FNS filter, Nautilus Plus, Sand Dollar filter systems, the Triton II sand filter, Meteor top mount filter systems manufactured 2009 and beyond, the Cristal-Flo II high rate sand filter, Tagelus filters with THD and clamp valve, Star filters, and Cristal-Flo II filter systems manufactured 2009 and beyond. Two of those entries carry a build date qualifier, so check the year on older Meteor and Cristal-Flo II systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy the gauge matters more than it looks\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eEvery decision about cleaning or backwashing a filter comes from pressure. When the gauge fogs over, sticks, or reads a few pounds off, the filter either gets cleaned too often or is left dirty until flow drops off. A working gauge is the cheapest instrument on the pad.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTwo part numbers\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003ePentair catalogs this gauge as both 190059 and 190059Z. If your paperwork shows one and the box shows the other, they refer to the same gauge with indicator.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48626212995284,"sku":"PAC-051-0317","price":58.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_4ed0ee46-d448-4d88-8be6-5885eca0ce03.png?v=1788706254"},{"product_id":"manifold-for-system-3-s7d75","title":"Sta-Rite Manifold for System 3 S7D75 DE Filter, 24800-0100Z","description":"\u003cp\u003eThe Sta-Rite 24800-0100Z is the manifold for the System 3 model S7D75 DE filter. It is the piece the DE grids seat into, and it collects filtered water from every grid and sends it to the outlet.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTwo part numbers for one part\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis manifold is listed both as 24800-0100Z and as 24800-0100. Both refer to the same replacement, so do not be thrown if your parts diagram or a previous invoice shows the number without the Z.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThe symptom\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDE powder coming back into the pool after a recharge. A cracked manifold or a split port lets water go around the grids instead of through them, and the powder follows it straight out at the returns. Owners often replace grids first and find the manifold was the real fault.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhile the tank is open\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eReaching the manifold means opening the tank and lifting the whole grid assembly. That is the moment to look over the grids, the supports and the tank band o-ring rather than doing it twice. Note also that the parts diagram this manifold appears on covers the S8D110 alongside the S7D75, so match the part to your own filter before you order.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48626218074324,"sku":"STA-051-2717","price":180.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_f3c506db-31cc-47ae-abf0-b4fdb033a08a.jpg?v=1788706383"},{"product_id":"150-sqft-filter-replacement-module","title":"Sta-Rite 150 Sq. Ft. Filter Replacement Module for System 2 PLM150, 27002-0150S","description":"\u003cp\u003eThis is the Sta-Rite 27002-0150S, the 150 sq. ft. filter replacement module for the System 2 PLM150 cartridge filter. It is the genuine Sta-Rite OEM part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSize\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe module is 13 in. in diameter and 18-3\/8 in. long, with 150 sq. ft. of filter area. Measure the old module if you are not certain which System 2 size you have, because the family shares a tank shape across several ratings.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA filter module has a service life. Cleaning restores most of it for a while, but eventually the media stops coming clean: pressure sits high right after a cleaning, and the interval between cleanings keeps shrinking. That is the point to replace the module rather than keep cleaning it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNote the pressure gauge\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eRecord the pressure with a fresh module installed and a clean filter. That number is your clean starting point, and everything you do later is judged against it.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48626219876564,"sku":"STA-05-247","price":368.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_b08a5923-4453-4ebe-93d0-498a20f62689.jpg?v=1788706440"},{"product_id":"o-ring-1","title":"Sta-Rite Black Tank O-Ring for Posi-Flo II PTM Cartridge Filters, WC9-3","description":"\u003cp\u003eThe Sta-Rite WC9-3 is the black tank o-ring for the Posi-Flo II cartridge filter in the PTM series and the PTM 135 series, and for the separation tank assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it seals\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis is the o-ring at the tank joint, the one that has to hold once the pump comes up to pressure. It lives in a groove, it takes a set from being compressed for years, and it dries out and nicks in service. A leak that starts right after a cartridge clean is almost always this ring going back in tired.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitting it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eClean the groove out completely before the new ring goes in, and use a silicone based lubricant made for pool o-rings. Petroleum grease will soften and swell the rubber, and the ring that was going to last several seasons will not.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48626284789972,"sku":"STA-051-3783","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_a19d5a20-3c40-4ab6-889b-d2a3d70b7150.jpg?v=1788707638"},{"product_id":"clamp","title":"Sta-Rite Filter Clamp for Posi-Flo II, 25010-9101","description":"\u003cp\u003eThe Sta-Rite 25010-9101 is the clamp assembly for the Posi-Flo II PTM series cartridge filters, covering the PTM-50, PTM-70, PTM-100 and PTM-135.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat the clamp does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe clamp is the band that holds the filter lid down onto the tank body against the pressure inside. It comes off every time the cartridge is cleaned and goes back on under tension, and after enough seasons of that plus weather the band corrodes, the fastener seizes or the shape goes out.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAny sign of rust through the band, a bent or sprung clamp, or a fastener that will not tension properly means the clamp is done. Replace it rather than persuading it, because it is the part that keeps a pressurised tank shut.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48626287837396,"sku":"STA-051-2944","price":158.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_38c24269-1402-4552-99f2-a9c2d05b1915.jpg?v=1788707706"},{"product_id":"air-relief-valve-assembly-pld-ptm","title":"Sta-Rite Air Relief Valve Assembly for PLD and PTM Filter Systems, 25010-0200","description":"\u003cp\u003eThe Sta-Rite 25010-0200 is the complete air relief valve assembly for PLD and PTM filter systems. The same valve is listed in the Posi-Flo II PTM and System 2 Modular Media PLM parts listings.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy the filter needs it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAir gets into the tank every time the system is opened, primed or restarted. It gathers at the top, where it takes up volume that should be full of water. That means less media in contact with flow, less filtration for the same run time and a pressure gauge that no longer tells you the truth about the filter. Opening the relief valve on startup pushes that air out until water shows, and then it has to close and stay closed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA valve that drips once the system is up to pressure, one that will not seat no matter how far it is turned, or one that has seized in place. Those are all wear at the seal and the seat, and they are fixed by changing the assembly rather than tightening it further.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitting\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eShut the pump off and let the system pressure drop to zero before removing the old valve. Working on a pressurized filter is how lids and valve bodies get launched.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48626307563732,"sku":"STA-051-2720","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_dc73ce8e-94d0-4a0c-afa6-8ce710118526.png?v=1788708004"},{"product_id":"25-filter-tank-o-ring-s8d110","title":"Sta-Rite 25 in. Filter Tank O-Ring, S8D110, 24850-0009Z","description":"\u003cp\u003eThe Sta-Rite 24850-0009Z is the 25 in. filter tank O-ring for System 3 filters. It is the seal that sits between the upper and lower halves of the tank.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eGet the size right\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSta-Rite lists tank O-rings by tank diameter, and there is a 21 in. ring as well as this 25 in. one. The filter model on the label is not enough on its own, so measure the tank or confirm the model plate before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich models\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe source carries two readings. The listing is titled for the S8D110, and it is also filed with the System 3 sand filter parts for the S7S50 and S8S70. Both are recorded here rather than picking one, so check yours against the tank.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitting\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eClean the groove out completely before the new ring goes in. Grit left behind is enough to hold a ring off its seat and start the same leak again. A silicone O-ring lubricant helps a ring of this diameter settle evenly all the way around before the tank comes back together.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48626368610516,"sku":"STA-051-2692","price":76.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_923359b1-3493-47fa-b9fd-e259474e8b9e.jpg?v=1788709384"},{"product_id":"bulkhead-retaining-nut","title":"Sta-Rite 4.5\" x 1.25\" Bulkhead Retaining Nut, 24752-0050","description":"\u003cp\u003eSta-Rite 24752-0050 is the bulkhead retaining nut used on System 3 filter tanks, measuring 4.5 inches by 1.25 inches. It is the nut that clamps the bulkhead fitting into the tank wall and holds the port square and sealed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitment, and a note on the listings\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe source data lists this nut two different ways. One listing puts it on the System 3 Modular SMD Series and SD Series D.E. filters. The other lists it under System 3 cartridge filter models S7M120, S7M400, S8M150 and S8M500, and D.E. filter models S7D75 and S8D110. Both readings are given here so you can check them against your own tank, along with the 4.5 inch by 1.25 inch dimensions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is in the box\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe retaining nut alone. The O-ring that seals the bulkhead and the bulkhead fitting itself are separate Sta-Rite parts, and both are worth inspecting while the tank is open.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48626375524564,"sku":"STA-051-2695","price":37.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_b3d64a4c-fbb9-4b5e-bd45-19b2cb9897de.jpg?v=1788709492"},{"product_id":"s8d110-full-filter-grid-set-13-grids","title":"Unicel S8D110 Full Filter Grid Set, 13 Grids, FS-3053","description":"\u003cp\u003eThe Unicel FS-3053 is the full replacement grid set for the Sta-Rite System 3 S8D110 DE filter. It contains all thirteen grids the tank takes: three FG-3916, two each of FG-3011, FG-3015 and FG-3016, and four FG-3019.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy replace the whole set\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDE grids are fabric over a frame, and the fabric is what holds the powder that does the filtering. Once the cloth thins, tears at a seam or pulls away from the frame, DE blows straight through into the pool and pressure never settles where it should. Because every grid in a tank has done the same hours, changing one at a time tends to be a series of return trips.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eGrids only. The manifold, standpipe, tank o-ring and clamp are separate parts, so inspect them while the tank is open and order anything that looks tired at the same time.\u003c\/p\u003e\u003cp\u003eIf your filter is the smaller System 3 S7D75, it takes an eleven grid set instead of this one.\u003c\/p\u003e","brand":"Unicel Filter Cartridges","offers":[{"title":"Default Title","offer_id":48626387615956,"sku":"UNI-051-3053","price":346.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_13d8d9dd-48b0-46da-b88d-b4f0875fc798.jpg?v=1788709644"},{"product_id":"valve-1-1-2-top-mount-clamp-style","title":"Pentair Valve 1-1\/2\" Top-Mount Clamp Style, 261186","description":"\u003cp\u003eThe Pentair 261186 is a 1-1\/2\" top-mount valve in clamp style, sold as the replacement for the Sta-Rite WC112-148 valve. The clamp and the valve to filter O-ring are supplied with it, so the two pieces most often lost or perished on an old install come in the box.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it fits\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt is listed for the Cristal-Flo T-BP Series high rate sand filters: the T-150BP1 15 inch, the T-170BP1 17 inch, the T-200BP1 20 inch and the T-240BP1 24 inch. Top-mount means the valve sits on the tank rather than off to the side, so the ports and the handle stay in reach when the filter is serviced.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBefore you order\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe manufacturer changed the design of this valve, and re-plumbing is necessary when it replaces the original. Treat the job as a small plumbing project rather than a straight swap: measure what runs into and out of the old valve, and have fittings on hand before the filter comes apart.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48626500272340,"sku":"PAC-06-1186","price":261.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_c15988a4-d4cb-4b0a-ac8c-80c70031d3d2.jpg?v=1788711006"},{"product_id":"t-bolt-assembly","title":"Sta-Rite T-Bolt Assembly for System 3 S7S50 and S8S70 Filters, 24850-0010","description":"\u003cp\u003eThe Sta-Rite 24850-0010 is the T-bolt assembly, also called the clamp bolt, for System 3 filters. It is the fastener that draws the band clamp tight around the joint between the two halves of the filter tank.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many the tank takes\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAn S7S50 uses seven clamps and bolts. An S8S70 uses eight. Count what is on your filter before ordering, and consider doing the whole ring at once. Every bolt on a tank has spent the same years in the same weather, so the one that seized is rarely the only one close to the end.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt is listed for the System 3 sand filters S7S50 and S8S70, and for the System 3 DE filters S7D75 and S8D110.\u003c\/p\u003e\u003cp\u003eA word on the job itself: the clamp is what holds a pressurized tank closed, so tighten evenly around the ring rather than running one bolt down at a time, and never start the pump with the clamp partly assembled.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48626514133204,"sku":"STA-051-9952","price":40.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_4997607a-b6ec-499f-a903-7cd7ea2f6735.jpg?v=1788711144"},{"product_id":"brass-tie-rod","title":"Sta-Rite Brass Tie Rod, 23900-0039","description":"\u003cp\u003eThe Sta-Rite 23900-0039 is the brass tie rod for the System 3 D.E. filters, models S7D75 and S8D110. It is the genuine Sta-Rite part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat a tie rod does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eTie rods are the tension hardware inside the filter that pull the assembly together and hold it against the tank seal. They live in standing water and take the full chemical load of the system, which is why the factory rod is brass rather than plated steel. A steel rod eventually corrodes, swells and seizes, and getting a seized rod out of a filter is a far worse afternoon than replacing it before it goes.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBefore you order\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eCount the rods in your filter. This listing covers a single tie rod, and a rebuild usually means replacing all of them at once so the tension is even.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48626591695060,"sku":"STA-051-6568","price":54.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_4bff2c55-605a-4069-bb9f-123782a90832.jpg?v=1788712801"},{"product_id":"o-ring-2-3-8-id-adapter-to-tank-plm-pld","title":"Sta-Rite O-Ring, 2-3\/8\" ID, Adapter to Tank, PLM\/PLD, 35505-1424","description":"\u003cp\u003eThis is the Sta-Rite 35505-1424 adapter to tank O-ring, the seal between the filter adapter and the tank on PLM and PLD style filters. It measures 2-3\/8 inches inside diameter with a 3\/16 inch cross section.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy it fails\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAn O-ring in this position spends its life compressed, warm and in chlorinated water. Over a few seasons it takes a permanent set, hardens and loses the springiness that made it seal. The result is a slow weep at the adapter that shows up as a wet spot on the pad or a drop in pressure as the filter pulls air.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eModel coverage\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt is listed across a broad run of Sta-Rite filters: the System 3 sand models S7S50 and S8S70, the System 3 cartridge models S7M120, S8M150, S7M400 and S8M500, the System 3 DE models S7D75 and S8D110, and the System 2 modular media PLM100 and PLM150. It is also listed for AquaTools permanent media AT84100 and AT84150 and the AT8230 and AT8236 DE filters.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitting\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eClean the groove and the mating face before the new ring goes in, and use a silicone lubricant made for pool equipment. Petroleum based grease attacks the material and will have you back at the same joint next season.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48626819858644,"sku":"STA-051-2701","price":16.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_59ac0530-3262-42e0-99dd-1102747a7a99.png?v=1788715429"},{"product_id":"cartridge-200-sq-ft-mod-media","title":"Sta-Rite OEM Replacement Element 200 Sq Ft Cartridge Filter for PLM200, 27002-0200S","description":"\u003cp\u003eThe Sta-Rite 27002-0200S is the 200 sq ft modular media cartridge element for the System 2 PLM200 filter. It is the genuine part, carried under both the Sta-Rite and Pentair names.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSize\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eFilter module PLM 200, 13 in. in diameter and 18-3\/8 in. tall. The PLM series shares the tank diameter across several sizes and changes the element height, so measure before ordering if you are not certain which model you have.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eCartridges are cleaned, not replaced, until cleaning stops working. Once a thorough overnight soak and rinse no longer brings the filter pressure back down to where it started, the media has taken in more than it will give up. Torn pleats, pleats matted flat against each other and separated end caps are the other signals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat you get from a fresh element\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eLower filter pressure, better flow through the whole system, and water that clears faster after a heavy swim or a storm. Two hundred square feet is a lot of media, and a filter running its full area works the pump less hard.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48626965479636,"sku":"STA-06-289","price":485.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_e29ba401-827b-470f-9039-9751f51f4e04.jpg?v=1788718570"},{"product_id":"sta-rite-replacement-cartridge-set-for-sta-rite-system-3-400-sq-ft-s7m400","title":"Sta-Rite OEM Replacement Cartridge Set for System:3 Filter, 400 Sq Ft, 170146","description":"\u003cp\u003eThis is the OEM replacement cartridge set for the Sta-Rite System:3 S7M400 modular media filter, sold under part number 170146.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTwo cartridges, one part number\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe 400 square foot System:3 gets its filter area from a pair of cartridges, one smaller cartridge inside and one larger cartridge around it. This kit supplies one of each, so a single order covers the whole filter.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen to change them\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eCartridges that will not wash back to clean starting pressure are finished. Because both cartridges in the S7M400 see the same water and the same running hours, changing them as a pair keeps the filter working evenly and saves opening the tank twice.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCheck the model\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eCartridge sets are matched to the filter they were built for. Confirm your filter is the 400 square foot S7M400 before ordering.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48627205472468,"sku":"STA-051-6579","price":733.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_154b6af1-5dfd-4786-af21-f007a40cfb69.png?v=1788720063"},{"product_id":"o-ring-3-3-4-id-for-bulkhead-assembly","title":"Sta-Rite O-Ring 3-3\/4\" ID, for Bulkhead Assembly, 35505-1425","description":"\u003cp\u003eSta-Rite part 35505-1425 is the o-ring for the bulkhead assembly, 3-3\/4 in. inside diameter with a 3\/16 in. cross section.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eGetting the size right\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAn o-ring is defined by two numbers, the inside diameter and the cross section. Match both. A ring that is the right diameter but thinner than the original will not fill the groove, and the joint will weep under pressure even though the ring looks correct.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere it is used\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt is listed for the Sta-Rite System 3 filter family, covering the S7S50 and S8S70 sand filters and the S7M120, S8M150, S7M400 and S8M500 cartridge filters. If the bulkhead is coming apart for any reason, fit the new ring rather than reusing one that has taken a set in the groove.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48627345227988,"sku":"STA-051-2703","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_ffa5e97d-b138-4718-b670-de75aa26347f.jpg?v=1788722700"},{"product_id":"25-lower-tank-half","title":"Sta-Rite 25\" System 3 Lower Tank Half, 24851-0103S","description":"\u003cp\u003eThis is the lower tank half for the 25 inch Sta-Rite System 3 filter, part number 24851-0103S. It is the bottom shell of the filter body, the piece the internals sit in and the plumbing connects to.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it fits\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSta-Rite lists it as the System 3 lower half tank shell replacement, and it also fits the Pentair System 3 SD-Series DE pool and spa filter model S8D110. System 3 tanks were built in more than one diameter, so measure the tank or read the model label before ordering, since this is the 25 inch shell.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen you need one\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA tank half is bought when the shell itself has failed: a crack, a split at the clamp band, or a leak that keeps coming back after a new o-ring and a careful clamp. Once the shell is compromised, no seal will hold it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat carries over\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe internals stay with your filter. Grids, the manifold, the laterals and the plumbing move into the new half. The tank o-ring that seals the two halves is a separate item, and fitting a fresh one is standard practice any time a filter is split open.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48627398705364,"sku":"STA-101-2815","price":1263.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_df2789b8-0bf5-415f-9bbd-96df09624cae.jpg?v=1788723024"},{"product_id":"adapter-fitting-before-10-03","title":"Sta-Rite Adapter Fitting Before 10\/03, 24900-0509","description":"\u003cp\u003eThe Sta-Rite 24900-0509 is the adapter fitting used inside a range of Sta-Rite and AquaTools filter tanks. It is the version for filters manufactured before 10\/03.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCheck the date first\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSta-Rite revised this fitting in October 2003, and the two versions are not interchangeable. Before ordering, find the manufacture date on the filter tank label. If the filter was built before 10\/03, this is the correct part; a later tank takes the revised fitting instead.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it fits\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe fitting is listed for the System 2 Modular Media filters PLM100 and PLM150, the System 3 cartridge filters S7M120, S8M150, S7M400 and S8M500, the System 3 DE filters S7D75 and S8D110, and the AquaTools permanent media AT84100 and AT84150 along with the AquaTools DE AT8230 and AT8236.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhile the tank is open\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eOpening a filter to reach the adapter is most of the work, so it pays to look at the seals at the same time. The adapter to tank o-ring is a separate part and is a common companion to this repair.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48627585974484,"sku":"STA-051-2699","price":38.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_1cefb6cc-13d2-43eb-b979-6b57d70e7e65.png?v=1788723939"},{"product_id":"upper-tank-shell-25","title":"Sta-Rite 25\" Upper Half Tank Kit for System 3 Filters, 24851-9001","description":"\u003cp\u003eThis is the 24851-9001 upper half tank kit, the 25 in. top half of the tank for Sta-Rite System 3 filters. The part is carried under both the Sta-Rite and Pentair names.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it fits\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe stated fit is the System:3 Modular SD Series pool and spa D.E. filter model S8D110 and the System:3 SS-Series pool and spa filter model S8S70. The same 25 in. tank kit also appears in the parts listings for the smaller System 3 models, so the safe step is to read the model number and tank size off the label on your own filter and match it before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eUpper half only\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis kit is the top half of the tank. The lower half, the clamp band and everything inside the filter are separate parts. A cracked or crazed upper half is the usual reason for buying one, since a tank that has split under pressure is not a candidate for repair.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48627626279124,"sku":"STA-051-2970","price":1252.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_ca8ce42e-1922-493b-896b-956750c3bf59.jpg?v=1788725522"},{"product_id":"o-ring-valve-flange","title":"Sta-Rite O-Ring, Valve Flange, U9-369","description":"\u003cp\u003eSta-Rite U9-369 is the flange o-ring that seals the multiport valve to the filter tank on Cristal-Flo top mount sand filters. It is the genuine Sta-Rite part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThe name to watch\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSta-Rite refers to this seal both as the valve flange o-ring and as the tank flange o-ring for the valve. They are the same part number, U9-369, so either description in a parts list points here.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere it fits\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt is used on the Cristal-Flo top mount sand filter family, with the 1-1\/2 in. multiport valve WC112-148 and the 2 in. multiport valve 14971-TM-22-L.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen to change it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eWater weeping from the joint where the valve meets the tank is the classic sign. The o-ring hardens and takes a set over years of pressure and chlorine, and it will not reseal once it has. Fit a new one any time the valve is lifted off the tank, and put a thin film of silicone lubricant on it before the valve goes back down.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48627686899924,"sku":"STA-051-5813","price":24.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_186a9037-3c1b-445c-8ea3-98131bf73c9b.jpg?v=1788726598"},{"product_id":"collector-hub-assembly-t-240bp-1","title":"Sta-Rite Collector Hub Assembly T-240BP-1, WC137-519P","description":"\u003cp\u003eThis is the collector hub assembly, part number WC137-519P, for the Cristal-Flo T-BP series high rate sand filter, model T-240BP-1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat the hub does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe collector hub sits at the bottom of the filter tank. The laterals thread into it and it connects to the standpipe, which makes it the single point every drop of filtered water passes through on its way out of the tank. Its condition decides whether water is drawn evenly through the sand bed or takes a shortcut.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen it needs replacing\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSand coming back into the pool is the usual sign that something in the underdrain has failed. Cracks in the hub body, damaged threads and broken lateral seats all let water bypass the media and carry sand with it. With the tank already open for sand replacement, the hub and laterals are worth inspecting closely.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMatch the model\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe T-BP range uses a different hub for each filter size. This one is the T-240BP-1 part, so confirm the model on your tank label before ordering rather than going by tank appearance.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48627695124692,"sku":"STA-051-2491","price":138.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_06fa4bb5-6d17-4a38-a80d-bad1d916a7b9.jpg?v=1788726692"},{"product_id":"cover-o-ring-1","title":"Sta-Rite Cover O-Ring for WC112-148\/WC112-148A, 35505-1275","description":"\u003cp\u003eThe Sta-Rite 35505-1275 is the cover o-ring for the WC112-148 and WC112-148A multiport valves. It is the genuine Sta-Rite part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it seals\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe o-ring sits between the valve body and the cover on top of the valve. That joint carries full system pressure every time the pump runs, so the seal takes a steady squeeze and slowly loses its shape. Once it goes hard or flat, water finds its way out around the lid.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen to change it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAny time the valve cover comes off for service is a good time to fit a fresh o-ring, since a used one rarely reseats as well the second time. Sta-Rite lists the part as the 1-1\/2 inch cover o-ring for this valve family, so order by the part number, 35505-1275.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48627731464404,"sku":"STA-061-5819","price":15.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_b9a874f6-2d89-4d7c-8479-6fea74150158.png?v=1788727418"},{"product_id":"o-ring-3","title":"Sta-Rite Swimquip Diverter O-Ring, 35505-1228","description":"\u003cp\u003eThe Sta-Rite 35505-1228 is the Swimquip diverter o-ring, the seal that rides on the diverter inside the multiport valve. It is listed for top mount 1-1\/2 inch Cristal-Flo and Waterford WC112-148 valves.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat goes wrong\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe diverter is what routes water to filter, backwash, waste or recirculate. Its o-ring is under constant pressure and constant movement, and over the years it hardens, flattens or tears. Once that happens the diverter no longer seals cleanly against the valve body, and water crosses over to a port it should not reach.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhile you are in there\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis is the diverter o-ring only. The cover o-ring, the plug and gasket assembly and the valve spring are separate items, and it is common practice to replace the soft parts together rather than open the valve twice.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48627736117460,"sku":"STA-061-6579","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_27de082e-c2dc-4538-a4e9-a73fce52236d.jpg?v=1788727516"},{"product_id":"cartridge-70-sqft","title":"Unicel UHD-SR70 Replacement Cartridge, 70 sq ft","description":"\u003cp\u003eThe Unicel UHD-SR70 is the replacement cartridge element for the Sta-Rite Posi-Flo II PTM TX-70 filter. It measures 8-11\/16 inches outside diameter by 18-3\/16 inches long and drops straight into the tank in place of the original element.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOn the square footage\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYou will see this cartridge listed at both 70 and 72 square feet. The 70 is the model designation, TX-70, and it is how the filter itself is sold. The 72 is a media area figure that appears in the same manufacturer data. Either way it is the correct element for that tank, and the physical dimensions above are what determine the fit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen to change it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eCartridges are cleaned, not replaced, until cleaning stops working. Once a full soak and rinse no longer brings the pressure back down, or the pleats have torn, or the end caps have started to pull away from the media, the element is finished. Running past that point costs you flow, shortens pump life and lets dirt straight back to the pool.\u003c\/p\u003e","brand":"Unicel Filter Cartridges","offers":[{"title":"Default Title","offer_id":48627841171668,"sku":"UNI-60-5223","price":85.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_c81ce9e2-fde0-45c5-8800-befe506a6141.jpg?v=1788728098"},{"product_id":"o-ring-2-1-8-id-1","title":"Sta-Rite O-Ring 2-1\/8\" ID, 35505-1428","description":"\u003cp\u003eSta-Rite 35505-1428 is a replacement o-ring measuring 2-1\/8 inches inside diameter with a 1\/8 inch cross section. It is listed under Sta-Rite System 3 cartridge filter parts, covering models S7M120, S7M400, S8M150 and S8M500, and is identified in the listing as the large elbow o-ring.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSize is the whole story\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAn o-ring that is close but not correct will seem to seal on assembly and weep under pressure. Check both numbers against the ring you are replacing: 2-1\/8 inches across the inside, 1\/8 inch thick.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhile the filter is open\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSeals harden, flatten and take a permanent set from years of compression. They are the cheapest part in a filter and the most common source of a drip. Any time the filter is apart for a cartridge clean, the o-rings are worth a look.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48627853099220,"sku":"STA-051-2947","price":16.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_7b722fad-3844-4892-82bb-13b6067d03c1.jpg?v=1788728344"},{"product_id":"drain-plug-1","title":"Sta-Rite Drain Plug for System 3 Models, 24900-0503","description":"\u003cp\u003eThe Sta-Rite 24900-0503 is the drain plug for System 3 filters, listed for the 21 inch and 25 inch tanks. It is the genuine Sta-Rite part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere it goes\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe plug closes the drain port at the base of the filter tank. It comes out when the filter is drained for a cleaning or for winterizing, and it has to go back in and seal before the system can be brought up to pressure again.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSta-Rite lists it across the System 3 range: the sand filters S7S50 and S8S70, the cartridge filters S7M120, S8M150, S7M400 and S8M500, and the DE filters S7D75 and S8D110.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy people order it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAlmost always because the old one did not make it back from the winter. It is a small part that holds up an opening, so a spare on the shelf is worth having.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48627904053460,"sku":"STA-051-2711","price":38.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_bf8077b0-0c87-4730-af97-d604551af85a.jpg?v=1788729720"},{"product_id":"clamp-knob","title":"Sta-Rite Clamp Knob, WC36-22Z","description":"\u003cp\u003eThe WC36-22Z is the clamp knob used across a wide span of Sta-Rite equipment: the Posi-Flo II cartridge filter, the Cristal-Flo high rate sand filter, the Max-E-Glas and Dura-Glas series, the IntelliPro VS 3050 pump and the Max-E-Pro series.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe clamp knob is the hand tightened fastener that draws the clamp band closed. It is small, it lives outdoors, and it is turned every time the filter is opened for a cartridge change or a teardown, which is why the threads eventually give up before anything else on the clamp does.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNaming\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe same knob appears under both the Sta-Rite and the Pentair name, in each case as WC36-22Z, so either label on your existing part is the right one.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48627924598996,"sku":"STA-051-3774","price":17.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_cd850d5f-6436-4cd9-bd5d-bbbeacb03c7b.gif?v=1788729879"}],"url":"https:\/\/www.activepoolsupply.com\/collections\/sta-rite-system-3-parts.oembed?page=5","provider":"Active Pool Supply","version":"1.0","type":"link"}