{"product_id":"hayward-relief-valve-gauge-adapter-dex2400s","title":"Hayward Air Relief Assembly for ProSeries Sand Filters W3S210S W3S310S | DEX2400S","description":"\u003cp\u003eThe Hayward Air Relief Assembly (DEX2400S) is the OEM replacement air relief assembly for Hayward ProSeries side-mount sand filters.\u003c\/p\u003e\n\u003cp\u003eThe air relief assembly vents trapped air from the filter tank, allowing the system to reach proper operating pressure and maintain consistent water flow through the filter media. Releasing accumulated air is a routine part of filter startup and backwash cycles.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin: 20px 0; border: 1px solid #ccc;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eHayward Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eDEX2400S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eUPC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e610377021081\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eFits Into\u003c\/h3\u003e\n\u003ctable style=\"width: 99.9677%; border-collapse: collapse; margin: 20px 0px; border: 1px solid rgb(204, 204, 204);\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 10px; width: 13.3582%;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 10px; width: 63.4067%;\"\u003e\u003cstrong\u003eEquipment Line\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 10px; width: 23.1541%;\"\u003e\u003cstrong\u003eModel \/ Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 10px; width: 13.3582%;\"\u003eHayward\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 10px; width: 63.4067%;\"\u003eProSeries 21\" Sand Filter - Side Mount (1 1\/2\" VariFlo Valve Included) (Open Line)\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 10px; width: 23.1541%;\"\u003eW3S210S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 10px; width: 13.3582%;\"\u003eHayward\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 10px; width: 63.4067%;\"\u003eProSeries 30\" Sand Filter - Side Mount (Valve Not Included) (Open Line)\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 10px; width: 23.1541%;\"\u003eW3S310S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003eCompatibility is based on Hayward parts documentation and available OEM records. This is not an exhaustive list. For certainty, verify the part number in your equipment's manual or on the original part itself before ordering.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003ePoolaroo Pro Tip\u003c\/h3\u003e\n\u003cp\u003eBefore removing the existing air relief assembly, ensure the filter system is shut down and tank pressure has been fully relieved. Inspect the assembly's O-ring and any sealing surfaces when fitting the replacement — a worn seal at this location is a common source of minor drips around the valve body.\u003c\/p\u003e\n\u003c!-- wft:processed:manual:2026-06-18 --\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":51774168662291,"sku":"DEX2400S","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0920\/0687\/5411\/files\/HPPDEX2400S_0.jpg?v=1747701941","url":"https:\/\/poolaroo.com\/products\/hayward-relief-valve-gauge-adapter-dex2400s","provider":"Poolaroo","version":"1.0","type":"link"}