{"product_id":"haywardmanualairreliefassemblydex2420mar2hppdex2420mar2","title":"Hayward Manual Air Relief Assembly | DEX2420MAR2","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThe Hayward DEX2420MAR2 Manual Air Relief Assembly is a genuine Hayward replacement part designed to help safely release trapped air from compatible pool filter systems. Installed at the top of select Hayward DE and cartridge filters, this assembly allows the filter tank to be manually vented during startup, servicing, and normal maintenance.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBy helping remove built-up air from the filter, the DEX2420MAR2 supports proper circulation, consistent filtration performance, and safer pressure management. It is commonly used with Hayward Pro-Grid DE filters and SwimClear cartridge filters as a replacement for older manual air relief assemblies.\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eIdeal For\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThis Hayward manual air relief assembly is ideal for pool owners or service professionals replacing a worn, leaking, cracked, or non-functioning air relief valve assembly on a compatible Hayward filter.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest suited for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eHayward Pro-Grid vertical grid DE filters\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHayward SwimClear cartridge filters\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible Hayward DE and cartridge filter systems\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eReplacing older DEX2420MAR-style assemblies\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRestoring proper manual air venting at the filter\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePool service repairs and filter maintenance\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003ch4\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eGenuine Hayward Replacement Part\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eThe DEX2420MAR2 is an original Hayward replacement assembly, built to match the fit and function required for compatible Hayward filter systems. Using a genuine part helps maintain proper sealing, pressure relief operation, and filter performance.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eManual Air Relief Function\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eThis assembly allows users to manually release trapped air from the filter tank, helping the system prime properly and reducing air accumulation inside the filter during operation.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eHelps Support Proper Filter Pressure\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eTrapped air inside a filter can affect water flow and pressure readings. This air relief assembly helps vent excess air so the filter can operate more efficiently and more consistently.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eCommon Replacement for DE and Cartridge Filters\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eThe DEX2420MAR2 is commonly used on compatible Hayward Pro-Grid DE filters and SwimClear cartridge filters, making it a frequently needed repair part for residential pool equipment systems.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eUpdated Replacement Assembly\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eThis part is commonly listed as the updated revision for older DEX2420MAR assemblies and is used as a replacement on compatible filters that originally used the previous version.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eTop-Mounted Filter Installation\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eThe assembly installs at the top of the filter tank where air collects, allowing air to be released before and during system operation according to Hayward’s safety instructions.\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eBenefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eHelps release trapped air from compatible Hayward filters\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSupports proper circulation and filtration performance\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAssists with safer filter startup and servicing\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHelps maintain accurate pressure management\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eGenuine Hayward part for dependable fit and function\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCommon repair part for Pro-Grid and SwimClear filters\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eUseful replacement for leaking, damaged, or worn air relief assemblies\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHelps restore proper manual venting operation\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003eSpecification\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eHayward\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eManual Air Relief Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel \/ Part Number\u003c\/td\u003e\n\u003ctd\u003eDEX2420MAR2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eDEX2420MAR2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC \/ Barcode\u003c\/td\u003e\n\u003ctd\u003e610377011105\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003ePool filter air relief \/ pressure venting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePool Type\u003c\/td\u003e\n\u003ctd\u003eIn-ground pools\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Filter Types\u003c\/td\u003e\n\u003ctd\u003eSelect Hayward DE and cartridge filters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommon Compatible Series\u003c\/td\u003e\n\u003ctd\u003eHayward Pro-Grid DE filters and Hayward SwimClear cartridge filters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReplaces \/ Alternate Part Numbers\u003c\/td\u003e\n\u003ctd\u003eDEX2420MAR, HAY-051-2420, HAYDEX2420MAR2, 17-150-1308\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation Location\u003c\/td\u003e\n\u003ctd\u003eTop of compatible filter tank\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperation Type\u003c\/td\u003e\n\u003ctd\u003eManual air release\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncludes Pressure Gauge\u003c\/td\u003e\n\u003ctd\u003eYes, commonly sold as assembly with pressure gauge\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncludes O-Rings \/ Nut\u003c\/td\u003e\n\u003ctd\u003eYes, commonly listed with valve O-ring, nut, and O-ring kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eHayward Pool Products\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e1 assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch3\u003eCustomer-Facing Q\u0026amp;A\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What does the Hayward DEX2420MAR2 do?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e \u003cstrong\u003eThe DEX2420MAR2 allows trapped air to be manually released from compatible Hayward pool filters. This helps the filter operate properly and supports safer pressure management during startup and servicing.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this a genuine Hayward part?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes. \u003cstrong\u003eThis listing is for the genuine Hayward Manual Air Relief Assembly, part number DEX2420MAR2.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Which filters does this fit?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e \u003cstrong\u003eThis assembly is commonly used with Hayward Pro-Grid DE filters and Hayward SwimClear cartridge filters. Customers should confirm their filter model before ordering.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this replace DEX2420MAR?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes. \u003cstrong\u003eDEX2420MAR2 is commonly listed as the updated replacement for DEX2420MAR on compatible Hayward filters.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this include the pressure gauge?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e \u003cstrong\u003eThis assembly is commonly sold with the pressure gauge included. Customers replacing a complete top air relief assembly should verify the included components before installation.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: When should this part be replaced?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e \u003cstrong\u003eReplacement is recommended when the existing air relief assembly is cracked, leaking, difficult to open or close, missing parts, or no longer sealing properly.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this part important for safety?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes. \u003cstrong\u003eManual air relief valves help release trapped air from pressurized filter systems. Always follow Hayward’s instructions and stand clear of the filter during startup.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c!--split--\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52762410713398,"sku":"HPPDEX2420MAR2 -H","price":149.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/1167\/9798\/files\/HPPDEX2420MAR2_0.jpg?v=1755535037","url":"https:\/\/poolsupplydepot.net\/products\/haywardmanualairreliefassemblydex2420mar2hppdex2420mar2","provider":"Pool Supply Depot","version":"1.0","type":"link"}