{"product_id":"pentairwaterpoolandspainc_r172248","title":"Pentair Inner Check Valve 1\/2\" for Model 320 In-Line Chlorinator | R172248","description":"\u003ch3\u003eOEM Replacement Check Valve for the Pentair Model 320 Chlorinator\u003c\/h3\u003e\n\u003cp\u003eThe Pentair R172248 is the OEM replacement 1\/2\" inner check valve for the Model 320 In-Line Automatic Chemical Feeder. If your chlorinator's check valve is no longer seating properly or allowing backflow, this is the direct replacement part.\u003c\/p\u003e\n\n\u003ch3\u003eWhat It Does\u003c\/h3\u003e\n\u003cp\u003eThe inner check valve controls the one-directional flow of water through the chemical feeder, preventing pool water from backflowing into the chlorinator body when the pump shuts off. A failed check valve can result in uncontrolled chemical release or backflow into the plumbing — replacing it restores correct feeder operation.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin: 20px 0; border: 1px solid #ccc;\"\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003ePentair Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eR172248\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003ePart Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eInner Check Valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eConnection Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e1\/2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eFits Equipment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eModel 320 In-Line Automatic Chemical Feeder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eQuantity Included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePro Tip\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, confirm the model number on your chemical feeder matches the Model 320. Pentair produced multiple chlorinator models with similar check valve configurations — ordering by the part number stamped on your existing valve is the most reliable way to confirm you have the correct replacement.\u003c\/p\u003e\n\n\u003c!-- wft:processed:manual:2026-04-06 --\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":53971991986451,"sku":"R172248","price":18.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0920\/0687\/5411\/files\/pentair-inner-check-valve-1-2-for-model-320-in-line-chlorinator-r172248-5.webp?v=1787787116","url":"https:\/\/poolaroo.com\/products\/pentairwaterpoolandspainc_r172248","provider":"Poolaroo","version":"1.0","type":"link"}