{"product_id":"hayward-cx120aa-filter-head-with-vent-valve","title":"Hayward CX120AA Filter Head with Vent Valve","description":"\u003cp\u003e\u003cstrong\u003eWhat This Part Is Used For\u003c\/strong\u003e\u003cbr\u003e The Hayward CX120AA Filter Head with Vent Valve is the top housing assembly for compatible Hayward cartridge filter systems. It includes a vent valve for releasing trapped air during startup. \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy This Part Matters\u003c\/strong\u003e\u003cbr\u003e A cracked or warped filter head can cause leaks and unsafe pressure buildup. Replacing it restores a proper seal and allows controlled air release. This supports safe filter operation and accurate pressure readings. \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features and Specifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eManufacturer part number CX120AA\u003c\/li\u003e\n\u003cli\u003eFilter head assembly with vent valve\u003c\/li\u003e\n\u003cli\u003eFor compatible Hayward cartridge filter systems\u003c\/li\u003e\n\u003cli\u003eTop housing component\u003c\/li\u003e\n\u003cli\u003eSupports manual air release during startup\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eInstallation and Fitment Guidance\u003c\/strong\u003e\u003cbr\u003e Shut off the pump and relieve filter pressure before removing the head. Inspect the tank O-ring and locking hardware during installation. Confirm by manufacturer part number before ordering. \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAbout the Hayward Brand\u003c\/strong\u003e\u003cbr\u003e Hayward manufactures cartridge filtration systems widely installed in residential pools. Their filter heads and vent assemblies are serviceable components. Pool professionals rely on genuine Hayward parts for proper fit and safe operation. \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon Service Context\u003c\/strong\u003e\u003cbr\u003e Often replaced after freeze damage or cracked housings. Also common during full filter rebuilds. \u003c\/p\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52050067980562,"sku":"CX120AA","price":71.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/2279\/1186\/files\/HPPCX120AA_0.jpg?v=1771890887","url":"https:\/\/www.aquaterrabackyard.com\/products\/hayward-cx120aa-filter-head-with-vent-valve","provider":"Aqua Terra Backyard","version":"1.0","type":"link"}