{"product_id":"waterwayfittingpackageinground4009974wwp4009974","title":"Waterway Filter Unions | 400-9974B","description":"\u003cdiv\u003e\n  \u003ch1\u003eWaterway Cartridge Filter Fitting Package | 400-9974B\u003c\/h1\u003e\n\n  \u003cp\u003e\n    The \u003cstrong\u003eWaterway 400-9974B Fitting Package\u003c\/strong\u003e is a dedicated plumbing connection kit designed specifically for\n    \u003cstrong\u003eWaterway inground cartridge pool filters\u003c\/strong\u003e, including Crystal Water–style cartridge filter housings.\n    This kit provides the correct union fittings and seals required to properly connect the filter’s inlet and outlet\n    ports to standard pool plumbing.\n  \u003c\/p\u003e\n\n  \u003ch2\u003eWhat These Parts Are For\u003c\/h2\u003e\n  \u003cp\u003e\n    This fitting package is used \u003cstrong\u003eonly at the cartridge filter tank\u003c\/strong\u003e. The components in this kit allow water\n    to flow from the pump \u003cem\u003einto\u003c\/em\u003e the cartridge filter and then \u003cem\u003eout\u003c\/em\u003e of the filter toward the heater,\n    chlorinator, and pool returns, while also allowing the filter to be disconnected for service without cutting pipe.\n  \u003c\/p\u003e\n\n  \u003ch2\u003eIncluded Components and Their Purpose\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n      \u003cstrong\u003eUnion Nuts:\u003c\/strong\u003e\n      Thread directly onto the cartridge filter’s inlet and outlet ports to secure the plumbing connections.\n    \u003c\/li\u003e\n    \u003cli\u003e\n      \u003cstrong\u003eUnion Tailpieces:\u003c\/strong\u003e\n      Glue into the pool plumbing and mate with the union nuts so the filter can be easily removed for cartridge cleaning\n      or replacement.\n    \u003c\/li\u003e\n    \u003cli\u003e\n      \u003cstrong\u003eUnion O-Rings:\u003c\/strong\u003e\n      Create a watertight seal between the union halves and the filter body to prevent leaks under pressure.\n    \u003c\/li\u003e\n    \u003cli\u003e\n      \u003cstrong\u003e2½\" to 2\" Reducers:\u003c\/strong\u003e\n      Allow the filter’s larger 2½\" ports to be connected to standard 2\" PVC pool plumbing.\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eWhere These Parts Are Used\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFilter Inlet:\u003c\/strong\u003e Connects pump discharge plumbing to the cartridge filter.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFilter Outlet:\u003c\/strong\u003e Connects filtered water to downstream equipment and return lines.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eService Connections:\u003c\/strong\u003e Union design allows easy filter removal without cutting plumbing.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eHand-tighten union nuts evenly to avoid damaging O-rings.\u003c\/li\u003e\n    \u003cli\u003eUse PVC primer and cement only on the glued tailpiece connections.\u003c\/li\u003e\n    \u003cli\u003eDo not glue union nuts or O-rings.\u003c\/li\u003e\n    \u003cli\u003eCheck for leaks after startup and retighten unions if necessary.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eMaintenance Tips\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eInspect union O-rings during cartridge cleaning and lubricate as needed.\u003c\/li\u003e\n    \u003cli\u003eReplace O-rings if flattening, cracking, or leaks occur.\u003c\/li\u003e\n    \u003cli\u003eKeep union threads clean to ensure smooth tightening and proper sealing.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n","brand":"Waterway","offers":[{"title":"Default Title","offer_id":46797847134383,"sku":"400-9974","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6415\/2239\/files\/waterway-filter-unions-400-9974b-pool-filter-parts-704513.jpg?v=1777068152","url":"https:\/\/freshized.com\/products\/waterwayfittingpackageinground4009974wwp4009974","provider":"Freshized","version":"1.0","type":"link"}