{"title":"Purex","description":"\u003cp\u003ePurex pool equipment and replacement parts at Active Pool Supply.\u003c\/p\u003e","products":[{"product_id":"impeller-7-5hp-1ph-3ph-mh","title":"Pentair C Series Pump Impeller, 1PH or 3PH Medium Head, 7.5HP","description":"\u003cp\u003eThe Pentair 070227 is the 7-1\/2 HP medium head impeller for the C Series commercial pumps sold under both the Pentair and Purex names. It fits the single phase CM-75 and the three phase CMK-75 and CMKL-75 bronze pumps.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eConstruction\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eCast bronze, closed face, with eight vanes. This is the CMK medium head configuration; C Series pumps were built in more than one head, so confirm yours before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDimensions for matching\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eOutside diameter across the vanes is 5-1\/8 in. Thickness at the outside edge is 1-1\/16 in. measured inside and 1-3\/8 in. measured outside. Front to back is 2-3\/4 in., not counting the 1-5\/8 in. diameter by 3\/8 in. long extension on the front face. The vaneless section measures 4-17\/32 in. outside and 4-5\/32 in. inside.\u003c\/p\u003e\u003cp\u003eThe impeller is what carries the motor's energy into the water. A worn or damaged one shows up as falling flow and rising motor load well before anything else on the pump complains, so on a commercial pump it pays to replace it as soon as the vanes show wear.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48624924557524,"sku":"PUR-101-1457","price":1308.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_36afa199-7617-4bc9-8264-36ec703b8654.png?v=1788653726"},{"product_id":"go-kit32v-9-viton-whisperflo-pump-seal-kit","title":"SuperPro Viton Whisperflo Pump Seal Rebuild Kit","description":"\u003cp\u003eThe SuperPro GO-KIT32V-9 is the Viton gasket and o-ring kit, Kit 32, for Purex Whisperflo and IntelliFlo pool pumps. It gathers the seal set for the pump into one package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy Viton\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eViton is a more chemically resistant elastomer than standard rubber. On a salt pool, a heavily chlorinated pool or a system running ozone, seals live a harder life, and the Viton version of the kit is the one to reach for.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it fixes\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eO-rings and gaskets flatten and harden with heat and time. The result is a pump that weeps at the lid or the housing seam, or one that struggles to hold prime because it is drawing air past a seal instead of water. Once the pump is open, replacing the full set costs nothing extra in labor and avoids a second teardown a month later.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis kit applies to the Whisperflo family, including the WF and WFE models, and to IntelliFlo pumps. Confirm the model on your pump label before ordering.\u003c\/p\u003e","brand":"SuperPro","offers":[{"title":"Default Title","offer_id":48625710334164,"sku":"SPG-601-5033","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_42f36691-8246-474c-92a9-294dacbd946f.png?v=1788688861"},{"product_id":"seal-pkg-svc-eq-c-series","title":"Pentair Seal Package for EQ and C Series Pumps","description":"\u003cp\u003eThe Pentair 071725S is the shaft seal package for EQ Series and C Series pumps. It is the genuine Pentair service part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat a shaft seal does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe motor shaft passes out of the wet end of the pump and into the motor. The shaft seal is what closes that opening, protecting the internal components from the water being pumped. It runs as two lapped faces held together, one turning with the shaft and one fixed, and it wears every hour the pump runs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThe symptom\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eWater dripping from between the seal plate and the motor, often with rust streaks down the motor face. Left alone it soaks the bearings and takes the motor with it, which turns a small part into a large one.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitting\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe seal comes as a package so the faces stay matched and clean, which is what a seal needs to last. Keep the faces free of grease and grit on installation.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48625735434452,"sku":"PUR-101-4892","price":53.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_2e915834-554d-4ace-8bf0-acb98ec90e0e.jpg?v=1788690284"},{"product_id":"set-screw-4-40-1-1-8-each","title":"Pentair Set Screw 4-40 1-1\/8\" (Each)","description":"\u003cp\u003eThe Pentair 071660Z is a 4-40 set screw, 1-1\/8 inch long, used across the Purex WhisperFlo and IntelliFlo pump families. It is sold individually and two are required per pump.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy the exact part matters\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA 4-40 thread at 1-1\/8 inch is an odd combination. Too short and the screw does not engage far enough to hold under vibration; too long and it bottoms before it clamps. Neither failure shows itself immediately, which is how a substituted screw ends up backing out weeks later on a pump that runs every day.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere it is used\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003ePentair lists 071660Z in the parts breakdowns for the WhisperFlo, including the WF and WFE models, the WhisperFlo VS and VST, and the IntelliFlo Variable, VF and VS+SVRS. It also appears in the Sta-Rite IntelliPro VS+SVRS variable speed breakdown.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOrdering\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBecause the price of one screw is trivial next to the trip back to the equipment pad, order both at once if the pump is due for service and buy a spare while you are at it.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48625785274580,"sku":"PUR-101-6170","price":8.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_115d0a77-10af-4f9c-b5de-6add2c7b8f03.png?v=1788692343"},{"product_id":"18-36-sqft-de-grid-purex","title":"Unicel 18 in. 36 Sq Ft DE Grid","description":"\u003cp\u003eThe Unicel FG-1236 is a vertical DE filter grid rated at 36 sq ft, for Purex DE filters. It measures 10-3\/4 in. by 19-3\/8 in. and belongs to the 18 in. tall grid family, so measure the grid you are replacing before you order.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere it fits\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt covers the Purex 2000 Series stainless DE filters, models SMBW 2024, 2036, 2048, 2060 and 2072 along with the 1018, 1027, 1036, 1045 and 1054 models, and the Purex 4000 Series molded DE filters in SM and SMBW models 4024, 4036 and 4048.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOne grid or the set\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis listing is a single grid. Grids tend to fail together, since they share the same age and the same backwash cycles, and DE returning to the pool through the returns is the symptom. If more than one is torn, the complete 36 sq ft grid set is usually the better call.\u003c\/p\u003e","brand":"Unicel Filter Cartridges","offers":[{"title":"Default Title","offer_id":48625841406164,"sku":"UNI-60-5201","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_9cf6cffb-8dc6-48c7-9b86-b979df45c516.jpg?v=1788701318"},{"product_id":"impeller-7-5hp-1ph-3ph-hh","title":"Pentair High Head Impeller 7.5HP for C Series Pump","description":"\u003cp\u003eThe Pentair 073829 is the high head impeller for the 7.5 horsepower C Series commercial pool pump, in both single phase and three phase builds. It is the genuine Pentair replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHigh head versus standard\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe C Series is sold in more than one flow range, and the impeller is what sets it. A high head pump uses a different cut than a standard one, so the two are not interchangeable. Read the number off the old impeller before you order, because fitting the wrong one changes the duty point of the whole system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy impellers get replaced\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eImpellers wear rather than break. Sand, grit and years of running erode the vane edges and open up the running clearance, and the pump gradually delivers less head for the same power. A fresh impeller puts the flow curve back where the system was designed to sit.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48626105123028,"sku":"PUR-101-1452","price":1363.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_ce242c8a-9b67-4164-81e8-25dd47e840b0.jpg?v=1788704849"},{"product_id":"impeller-5hp-1ph-3ph-hh","title":"Pentair Impeller 5 HP 1PH\/3PH High Head","description":"\u003cp\u003eThe Pentair 073828 is the 5 HP high head impeller for Pentair commercial pool pumps, listed for both single phase and three phase motors. It is the genuine Pentair service part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat the impeller decides\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe impeller is the part that actually moves the water. Its diameter and vane shape set how much flow the pump makes and how much pressure it can build, which is why a pump is specified with a particular impeller rather than just a horsepower. A high head trim like this one is cut for pressure.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eImpellers wear, crack and pack with debris. The symptom is usually a slow loss of flow and pressure while the motor sounds perfectly healthy. Fitting the correct impeller, rather than whatever is close, is what returns the pump to its rated performance.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48626108661972,"sku":"PUR-101-1455","price":1303.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_3f0549b3-aa77-4ee6-afd3-2282ffcfa277.jpg?v=1788704914"},{"product_id":"impeller-10-hp-1-ph-3-ph-hh","title":"Pentair Impeller, 10 HP, 1 PH\/3 PH, High Head","description":"\u003cp\u003eThis is the Pentair high head impeller for 10 horsepower commercial pool pumps, single phase or three phase. The source lists the part as 73830 and also refers to it as 073830, which is the same impeller written with and without the leading zero.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHigh head, not standard\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAt any given horsepower a pump can be built with more than one impeller. The high head version trades some volume for pressure, so it keeps working against long pipe runs, deep filtration and the head that commercial systems carry. Fitting the wrong curve gives you a pump that runs but never reaches the numbers the system was designed around.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eImpellers wear from the inside out. Sand and grit round off the vane edges and open the clearance between the impeller and the diffuser, and flow falls away year by year. Because it happens gradually and the pump keeps sounding healthy, it usually gets blamed on the filter first.\u003c\/p\u003e\u003cp\u003eIt is listed with the Pentair R Series commercial pump parts covering 5 to 15 HP and with the Purex Pentair C Series commercial pump parts. Confirm the horsepower and the head rating on your pump before ordering.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48626118787284,"sku":"PUR-101-1458","price":1308.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_b9cc9451-b094-4ab3-9b21-6075403e39ad.jpg?v=1788705075"},{"product_id":"holding-wheel-assembly-cfm315","title":"Purex Holding Wheel Assembly for CFM315 Filter","description":"\u003cp\u003eThis is the Purex 70233 holding wheel assembly for the CFM315 cartridge filter, supplied under the Pentair brand.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eGetting the right one\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe Purex CFM was built in more than one size, and parts are not interchangeable across the range. This assembly is the one listed for the CFM315, so check the model on the filter label before you order.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat you get\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe part ships as the complete holding wheel assembly, ready to fit in place of the original. It goes out by parcel carrier.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48626220073172,"sku":"PUR-051-3450","price":72.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_919f1fa0-9481-47f1-9d6a-dfb2788a2327.jpg?v=1788706455"},{"product_id":"union-o-ring","title":"Pentair Genuine OEM Replacement Union O-Ring","description":"\u003cp\u003eThe Pentair 071426Z is the rubber union o-ring that seals the union nut where PVC plumbing connects to the filter. It is the genuine Pentair part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy it fails\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe union o-ring lives between hot water, sanitizer and system pressure. Over the years it takes a set, goes hard, then flattens or cracks. The result is a steady drip at the union that does not stop no matter how hard the nut is tightened, and tightening harder usually makes it worse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere it is used\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003ePentair lists this o-ring across a wide spread of equipment, including Clean and Clear and Predator filters, SM and SMBW 2000 Series backwash valves, the aboveground Clean and Clear and EasyClean DE systems, Purex Tahitian sand filters, and Jacuzzi Earthworks DE filters. Because it turns up in so many breakdowns it is a sensible spare to keep on hand.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48626479988948,"sku":"PUR-061-3401","price":6.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_c2e90f99-3fe2-4621-9b79-264b1b6577f2.gif?v=1788710754"},{"product_id":"manifold-8-hole-oem","title":"Pentair Purex 8 Hole Manifold (OEM)","description":"\u003cp\u003ePentair Purex 073270Z is the OEM eight hole manifold used in Purex DE filters. It is the piece the DE grids seat into, and the path filtered water takes on its way out of the tank.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere it fits\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt is listed for the Purex 2000 Series stainless DE filters, SMBW models 2024, 2036, 2048, 2060 and 2072 along with the 1018, 1027, 1036, 1045 and 1054 models, and for the Purex 4000 Series molded SM and SMBW filters 4024, 4036 and 4048. Count the ports on the manifold you are removing to confirm you need the eight hole part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA manifold that has cracked, warped or lost its grip on the grid ports will let diatomaceous earth slip past the grid set and back into the pool. If DE keeps returning through the returns after a fresh charge, the manifold is worth pulling and inspecting while the filter is open.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48626865864916,"sku":"PUR-051-4915","price":38.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_c2985490-2398-4fe5-bd12-44a664f7603d.jpg?v=1788716034"},{"product_id":"tapered-valve-rotor-seal","title":"Purex Tapered Valve Rotor Seal","description":"\u003cp\u003eThe Purex 71720 is the tapered valve rotor seal, listed for Pentair SM and SMBW 2000 Series backwash valves and for the Purex 4000 Series molded DE filters in models 4024, 4036 and 4048.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it seals\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eInside the valve, a tapered rotor turns to line up ports for filter, backwash and rinse. This seal is what keeps those ports separated as the rotor moves. When it hardens or wears down, water finds a path between ports it should never take, and the valve stops doing its job even though the handle still turns normally.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThe symptom\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDirt coming back into the pool while the valve is set to filter is the classic sign of a bypassing rotor seal. So is water leaving the waste line when the valve is not on backwash. Both are seal problems rather than filter problems, and both are cheaper to fix than they look.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48627171459284,"sku":"PUR-061-3429","price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_91b81de8-aa41-4265-bd1f-a15e0054790b.jpg?v=1788719854"},{"product_id":"clamp-bolt-kit","title":"Pentair Clamp Bolt for Purex and Nautilus Plus Stainless DE Filters","description":"\u003cp\u003eThe Pentair 070428Z is the clamp bolt for Purex and PacFab Nautilus Plus stainless DE filters. It is the genuine Pentair part, listed at 1\/4 in 20 x 3-1\/2 in.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eStainless DE filter tanks are made in two halves held together by a clamp ring, and the bolt is what draws that ring tight. It lives outdoors, wet, for years, so it corrodes and stretches. A bolt that no longer pulls the band down evenly leaves the tank seeping at the seam, and forcing a tired bolt is how the band gets damaged as well.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe part is listed for the Purex 2000 series stainless DE filters, models SMBW 2024, 2036, 2048, 2060 and 2072 along with 1018, 1027, 1036, 1045 and 1054, and for the Pentair PacFab Nautilus Plus INS DE models INS24, INS36 and INS48. Note that the source names it a clamp bolt in one place and a clamp bolt kit in another, so check the description against the fasteners you actually need.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48627238469844,"sku":"PUR-051-4903","price":17.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_88b0672c-1bd2-4a7b-b48a-83fddc75cfb2.jpg?v=1788720254"},{"product_id":"impeller-15hp-3ph-hh-c-series","title":"Pentair Impeller, 15 HP 3 Phase, HH C Series","description":"\u003cp\u003eThe Pentair 73831 is the impeller for the 15 HP three phase HH C Series pump, a genuine Pentair pump part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eGetting the right impeller\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eImpellers on commercial pumps are matched to the horsepower of the motor turning them, so the 15 HP designation is not a suggestion. Check the horsepower on the motor nameplate and the impeller code cast into the part you are removing before ordering, since the C Series covers a wide horsepower range with a different impeller at each step.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhile the pump is apart\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis listing is the impeller by itself. The mechanical seal, the o-rings and any wear ring are separate parts. A pump this size takes real work to open, so plan on refreshing the seals at the same time rather than going back in later.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48627340116180,"sku":"PUR-101-1453","price":1315.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_2a2f8658-ee6a-41d0-9c16-b43438f09c77.jpg?v=1788722671"},{"product_id":"rotor-shaft-o-ring","title":"Purex (Pentair) Rotor Shaft O-Ring","description":"\u003cp\u003eThe Purex JV18 is the rotor shaft O-ring for the Pentair SM and SMBW 2000 series backwash valves. Purex is now part of Pentair, and the part number carried over unchanged.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it seals\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt sits around the rotor shaft inside the valve. Like any O-ring in a moving joint, it hardens and takes a set with age and chemical exposure, and when it does the valve starts to weep at the shaft under pressure.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBefore you order\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA backwash valve carries several O-rings of broadly similar size, so check yours against the parts diagram for the valve rather than by eye. If the valve is coming apart anyway, the rest of the seals in it are the same age and cost the same labor, and doing them together saves opening the valve twice.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48627601735892,"sku":"PUR-061-3407","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_b8d978f7-bf00-4877-bab3-288f04968065.jpg?v=1788724092"},{"product_id":"brass-seal-flange-machine-c-52","title":"Pentair Purex Brass Seal Flange Machine C-52","description":"\u003cp\u003ePurex Pentair 70906 is the brass seal flange listed under machine C-52 in the C Series commercial pump parts range. It is the flange the mechanical seal and motor face work against, so its condition governs whether the wet end stays dry.\u003c\/p\u003e\u003cp\u003eBrass is what makes this part worth replacing rather than substituting. The flange is a machined sealing surface under constant wet load, and the material is what keeps that surface true through repeated seal changes.\u003c\/p\u003e\u003cp\u003eOrder it against part number 70906 and against the C-52 designation, since C Series commercial parts do not interchange with the residential Purex and Pentair pump ranges.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48627950092500,"sku":"PUR-101-6528","price":586.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_94cdaec4-839a-49d0-a9d3-e583a3069f28.jpg?v=1788730700"},{"product_id":"h-series-valve-body-o-ring","title":"Pentair H-Series Valve Body O-Ring","description":"\u003cp\u003eThe Pentair 71427 is the H-Series valve body o-ring. It is the genuine factory seal for the valve body, and it turns up on several older valve families.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere it is used\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003ePentair lists it for the American Products 2 in. H and M Series multiport valves, and for the Purex 2000 Series backwash valves fitted to SM and SMBW filters. It also appears in the QuietFlo and Aquatron pump parts listings.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy it fails\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eO-rings do not wear out so much as they harden. Years of heat, chlorine and compression take the spring out of the rubber, it takes a permanent set, and the seal starts weeping at the body. The leak looks like a failed valve, which is how a five dollar part ends up costing someone a whole multiport.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhile you are in there\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe union o-ring and the rotor shaft o-ring are separate parts. If the valve is coming apart anyway, it is worth having all three on hand rather than opening it twice.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48627968147668,"sku":"PUR-061-3402","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_2f472804-174c-454f-aa78-b3d370486660.png?v=1788731926"},{"product_id":"30-60-sqft-de-grid","title":"Unicel 30\", 60 Sq Ft DE Grid","description":"\u003cp\u003eThe Unicel FG-1260 is a vertical DE filter grid rated at 60 square feet, made to replace the original element in Purex DE filters.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSizing\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe source lists it as a 30 inch grid and gives the measurements as 10-3\/4 inches by 31-5\/16 inches. Those two readings do not agree exactly, so measure the grid you take out rather than ordering on the name. Getting it wrong on a set of grids is an expensive mistake.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt is listed for Purex 2000 Series stainless DE filters, covering the SMBW 2024, 2036, 2048, 2060 and 2072 and the 1018, 1027, 1036, 1045 and 1054, and for Purex 4000 Series molded SM and SMBW filters in 4024, 4036 and 4048 sizes.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBuying a set\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA DE filter runs a full complement of grids and they wear at much the same rate. When one has gone thin or split from age, the rest are rarely far behind, so plan on a complete set unless a single grid was damaged by something specific.\u003c\/p\u003e","brand":"Unicel Filter Cartridges","offers":[{"title":"Default Title","offer_id":48628786102484,"sku":"UNI-60-5203","price":50.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_990b5d4d-c7b0-4c06-b1de-62653f1daeea.jpg?v=1788750647"},{"product_id":"holding-wheel-kit","title":"Pentair Purex Holding Wheel Kit","description":"\u003cp\u003eThe Purex 071019Z holding wheel kit is the genuine Pentair replacement for the holding wheel hardware used across several Purex filter families.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it fits\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt is listed for the Purex CFW cartridge filters, models CFW-120, 180, 315 and 405, and for the Purex 2000 Series stainless DE filters and the 4000 Series molded DE filters. Check the part number against the parts list for your tank before ordering, because the same kit is shared across those families.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKeeping an older Purex filter going\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese tanks outlast their small hardware. Replacing a worn holding wheel kit is a straightforward way to keep a working Purex filter in service instead of replacing the whole unit.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48628813988052,"sku":"PUR-051-4914","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_5c49792d-1c65-4b8f-b830-8b14a036ee0a.jpg?v=1788752315"},{"product_id":"cartridge-105-sqft","title":"Unicel Cartridge, 105 sq ft, C-7496","description":"\u003cp\u003eThe Unicel C-7496 is a replacement cartridge element rated at 105 square feet. It measures 7 inches across the outside diameter and 25-5\/8 inches long, the dimensions that decide whether a cartridge fits the tank it is going into.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMatching it to your filter\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe source lists the filter manufacturer as Purex, the line now carried by Pentair. It also carries two different filter model numbers against this cartridge, which is why the safest check is the physical one: pull the old element, measure the outside diameter and the overall length, and compare them to the numbers above.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eCartridges are consumable. Once a soak and a rinse no longer bring the filter pressure back to where it started, or the pleats are torn, thinned or permanently discolored, the element has done its work and a new one restores flow.\u003c\/p\u003e","brand":"Unicel Filter Cartridges","offers":[{"title":"Default Title","offer_id":48628844429524,"sku":"UNI-60-5271","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_fc07394c-ec41-4286-b3ce-16a1f8957b74.jpg?v=1788755192"},{"product_id":"compression-screw-1-4-20x5-8","title":"Purex Compression Screw 1\/4-20 x 5\/8\"","description":"\u003cp\u003ePurex 74927 is a 1\/4-20 by 5\/8 inch compression screw, a filter valve part carried in the Purex 2000 Series SM and SMBW backwash valve group. It is a Pentair supported Purex piece.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eRead the listing carefully\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe source is not consistent about what this part is. The title calls it a compression screw and the description calls it a stainless steel compression spring. The thread size, the length and the part number agree across both, but the shape does not. Compare the photograph with the piece you are removing before ordering, and if it does not match, ask before you buy.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSmall parts, big consequences\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBackwash valve hardware is cheap and easy to lose in the grass while the valve is apart. It is worth having the right fastener on hand before the valve comes off, rather than trying to make something from the hardware store work in a part that sees pressure and chlorinated water all season.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48633763463380,"sku":"PUR-061-3419","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_8ccfea7c-0102-4ccc-8cff-46767dd393ea.jpg?v=1788814658"},{"product_id":"clamp-band-assembly-stainless","title":"Pentair WhisperFlo Clamp Band Assembly, Stainless","description":"\u003cp\u003ePentair 070711 is the stainless steel clamp band assembly for the old style clamp lid, used on WhisperFlo pumps built before 12\/17\/99. It is the genuine Pentair part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eOn the older WhisperFlo the pump lid is held down by a band clamp that wraps the rim and pulls it tight against the o-ring. If the band is corroded, distorted or its hardware has seized, the lid will not pull down evenly, the pump loses prime and air is drawn into the system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eStainless for a reason\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAn equipment pad is a wet, chemical heavy place, and a band clamp spends its life there. Stainless keeps the assembly serviceable and the fasteners turning far longer than a plated part would.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBefore you order\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eGo by the build date rather than the model name. This is the part for WhisperFlo pumps made prior to 12\/17\/99, with the metal clamp style lid. It is also listed on the QuietFlo and Aquatron pump parts breakdowns under the Pentair and Purex names.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48634040090836,"sku":"PUR-101-3344","price":87.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_48198d02-d0f9-4ca1-aa5e-4cca19d22af6.png?v=1788825128"},{"product_id":"impeller-washer","title":"Pentair Impeller Washer","description":"\u003cp\u003eThe Pentair 71048 is the impeller washer carried as C-71 for the C Series pump. It is the genuine Pentair part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe washer sits in the stack that clamps the impeller onto the motor shaft. It is a small piece, but it sets how the load is spread when the impeller is tightened down. Fit the wrong thickness or leave it out and the impeller can work loose in service, which chews the shaft and turns a cheap repair into a motor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich pump\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe source data places this part in two places. It is described as the C-71 washer for the C Series pump, and it also appears under the R Series 5 to 15 HP commercial pump parts. Because those are different families, match part number 71048 against your own pump parts breakdown rather than assuming from the pump name.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhile you are in there\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe rubber impeller washer gasket is a separate part. If the washer is worn or corroded, the gasket under it usually is too, and both are cheap next to a second teardown.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48634617561300,"sku":"PUR-101-3387","price":20.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_e61d5953-b0da-4e93-9539-5deb48038ee3.jpg?v=1788835489"},{"product_id":"tank-clamp-knob","title":"Pentair Tank Clamp Knob","description":"\u003cp\u003eThe Pentair 76033, also written 076033, is the replacement tank clamp knob for PacFab Nautilus and Nautilus Plus DE filters and the Purex 4000 Series molded DE filters. The source describes it as the part for units built after 1999.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat the knob does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA DE filter tank is two halves held together by a band clamp. The knob is the threaded handle that draws that clamp tight. It gets turned every time the filter is opened for a tear down or a grid inspection, and that is when it strips, cracks or snaps off.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFit it before the system runs\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA tank clamp that cannot be properly tensioned is not a cosmetic problem. The filter operates under pressure and the clamp is what keeps the halves together. If the knob is broken or the threads are gone, replace it before the pump is started again.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48634722451668,"sku":"PUR-051-6535","price":18.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_5b3bc046-001a-4c9e-ab93-20bd608624cb.png?v=1788836608"},{"product_id":"impeller-locking-screw-1","title":"Pentair Impeller Locking Screw for EQ\/Purex C Series","description":"\u003cp\u003ePentair 71037 is the impeller locking screw used on EQ Series and Purex C Series commercial pool pumps. It is the genuine Pentair part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe impeller threads onto the motor shaft and this screw is what keeps it there. It is a small fastener doing a serious job: if it backs out or fails, the impeller moves on the shaft under load and takes the seal plate and often the impeller itself with it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen to fit a new one\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eReplace the screw any time the impeller comes off for a seal change or an impeller swap. Corrosion and repeated torquing both take the reliability out of the original, and on a commercial pump the cost of a fresh screw is not worth weighing against the downtime.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48635034239188,"sku":"PUR-101-3386","price":13.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_bb942c84-1392-41e3-89a8-fc63f7406ddb.jpg?v=1788839936"},{"product_id":"lock-washer-2-required","title":"Pentair Purex 1\/4\" Stainless Steel Split Lock Washer, 2 Required","description":"\u003cp\u003ePurex 72172Z is a 1\/4 inch stainless steel split lock washer, and two are required wherever it is called out. It is small, cheap hardware that turns up on a lot of parts diagrams: Purex CFW cartridge filters, Purex 4000 Series molded DE filters, Pentair SM and SMBW 2000 Series backwash valves and Pentair EQ Series commercial pumps.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy the washer matters\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA split lock washer works by springing open against the nut as it is torqued down. The cut ends dig in and stop the fastener walking loose under the constant low frequency vibration a pump puts through a filter bank. Once the split has been crushed flat, or the washer has corroded, it no longer does that job and the nut it sits under starts to loosen between service visits.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eStainless, not plated\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eStainless matters here more than it does indoors. Equipment pad hardware lives in splash, condensation and chlorinated air, and plated washers rust to the stud until the next technician has to cut them off. Replace the pair whenever you have the assembly apart rather than reusing crushed originals.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48635042103508,"sku":"PUR-051-3443","price":10.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_99310742-2146-46c0-a2d9-7f8479100780.jpg?v=1788840465"},{"product_id":"washer-5-16-id-x-3-4-od","title":"Pentair Washer 5\/16\" ID x 3\/4\" OD","description":"\u003cp\u003ePentair 72173 is a stainless steel flat washer measuring 5\/16 inch inside diameter by 3\/4 inch outside diameter. It is generic looking hardware that appears on a surprising number of parts diagrams, from Challenger pumps through PacFab Nautilus DE filters to the Purex CFM, CFW, 2000 Series and 4000 Series filter families.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA flat washer spreads the clamping force of a nut or bolt head over a wider area. On filter clamps and pump hardware that matters, because without it the fastener bites straight into the casting or the band and slowly deforms it. It also gives the fastener a clean, flat face to turn against so torque readings mean something.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOrdering\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe source parts listing shows this washer as four required. That number belongs to a particular assembly, so count the washers you removed and work from your own diagram rather than assuming. Renew all of them together while the assembly is apart, since a corroded or dished washer will not clamp evenly against fresh ones.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48635042201812,"sku":"PUR-051-8141","price":5.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_517d9ec1-e5ca-4471-aa46-7e94fec06d89.png?v=1788840475"},{"product_id":"o-ring-c-70-c-series-p24050","title":"Pentair Purex O-Ring C-70 C Series P24050","description":"\u003cp\u003ePurex 71423 is an O-Ring listed as C-70 C Series P24050, catalogued in the Purex and Pentair C Series commercial pump parts. It is the genuine part, carried under Pentair since Purex came into the Pentair line.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTwo numbers, one seal\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis ring is carried as 71423 and as P24050. Older parts diagrams and distributor lists do not agree on which they show, so it is worth knowing both before you start matching numbers off a drawing. The C-70 in the listing sits alongside those numbers without further explanation, so treat it as part of the catalog description and confirm against your own parts list.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy commercial pump seals get changed on schedule\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA residential pump runs a few hours a day. A C Series commercial pump can run most of the day, every day, and seals age on run time rather than on the calendar. That is why a seal that would last years on a backyard pool becomes an annual item on a commercial installation. Change it while the pump is apart for other work, clean the groove, and use a silicone based O-Ring lubricant so the new ring seats without rolling out of place.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48635042889940,"sku":"PUR-101-4891","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_cf163252-5b6b-4438-947d-a2c9aff881df.jpg?v=1788840525"}],"url":"https:\/\/www.activepoolsupply.com\/collections\/purex.oembed","provider":"Active Pool Supply","version":"1.0","type":"link"}