{"product_id":"air-relief-valve-assembly-pld-ptm","title":"Sta-Rite Air Relief Valve Assembly for PLD and PTM Filter Systems, 25010-0200","description":"\u003cp\u003eThe Sta-Rite 25010-0200 is the complete air relief valve assembly for PLD and PTM filter systems. The same valve is listed in the Posi-Flo II PTM and System 2 Modular Media PLM parts listings.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy the filter needs it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAir gets into the tank every time the system is opened, primed or restarted. It gathers at the top, where it takes up volume that should be full of water. That means less media in contact with flow, less filtration for the same run time and a pressure gauge that no longer tells you the truth about the filter. Opening the relief valve on startup pushes that air out until water shows, and then it has to close and stay closed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA valve that drips once the system is up to pressure, one that will not seat no matter how far it is turned, or one that has seized in place. Those are all wear at the seal and the seat, and they are fixed by changing the assembly rather than tightening it further.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitting\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eShut the pump off and let the system pressure drop to zero before removing the old valve. Working on a pressurized filter is how lids and valve bodies get launched.\u003c\/p\u003e","brand":"Sta-Rite","offers":[{"title":"Default Title","offer_id":48626307563732,"sku":"STA-051-2720","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_dc73ce8e-94d0-4a0c-afa6-8ce710118526.png?v=1788708004","url":"https:\/\/www.activepoolsupply.com\/products\/air-relief-valve-assembly-pld-ptm","provider":"Active Pool Supply","version":"1.0","type":"link"}