{"product_id":"2-1-2-tailpiece-with-piston-o-ring-groove","title":"Waterway 2 1\/2\" Tailpiece with Piston O-Ring Groove","description":"\u003cp\u003eThe Waterway 417-2201 is a 2 1\/2 inch tailpiece machined with a groove for the piston o-ring. It is a Waterway filter part, used on the Crystal Water cartridge filter range.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy the groove matters\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA plain tailpiece is just a pipe connection. This one has to do more: the groove around it holds the piston o-ring, and that o-ring is what actually seals. If the groove is worn, scored or has been chewed by an over-tightened fitting, the joint keeps seeping however many new o-rings you push into it, which is usually the point at which the tailpiece itself needs to come out.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBefore you order\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eCheck the size. This is the 2 1\/2 inch tailpiece, and Waterway makes others in different sizes under their own part numbers. Waterway also sells the matching 2.5 inch tailpiece o-ring separately, so if the old one is flat, cracked or has taken a set, replace both at once and you will only do the job the once.\u003c\/p\u003e","brand":"Waterway","offers":[{"title":"Default Title","offer_id":48634609664212,"sku":"WWP-851-2201","price":11.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_dbd21eaa-5168-47ae-b989-8f5df2305c7e.jpg?v=1788835398","url":"https:\/\/www.activepoolsupply.com\/products\/2-1-2-tailpiece-with-piston-o-ring-groove","provider":"Active Pool Supply","version":"1.0","type":"link"}