{"product_id":"elbow-check-valve","title":"Pentair Elbow Check Valve","description":"\u003cp\u003eThe Pentair R172061 is the elbow check valve for the Rainbow chemical feeders, models 300, 302, 300-19 and 300-29. It is the genuine Pentair part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe check valve is built into an elbow, so it turns the line and controls the direction of flow in the same fitting. Flow goes one way and is blocked from coming back, which is what keeps feeder solution in the plumbing it belongs in.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eChemical feeders are a hard environment for small plastic parts. A check valve that is cracked, distorted or no longer seating should be changed, and since it is an inexpensive piece it is worth doing while the feeder is already open for other service.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48626502729940,"sku":"RAI-451-4209","price":11.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_1a9d4962-efa0-4f59-b164-7136985db751.jpg?v=1788711044","url":"https:\/\/www.activepoolsupply.com\/products\/elbow-check-valve","provider":"Active Pool Supply","version":"1.0","type":"link"}