{"product_id":"haywardstarcleariifilterheaddomelidwairreliefcx800chppcx800c","title":"Hayward Star-Clear II Filter Head Dome Lid w\/ Air Relief | CX800C","description":"\u003cdiv\u003e\n\u003ch2\u003eHayward CX800C – Filter Head Assembly with Air-Relief\u003c\/h2\u003e\n\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe Hayward CX800C is a factory-replacement filter head designed for the StarClear II™ cartridge filter series. It includes an integrated air-relief vent and offers a durable, precisely-engineered cover assembly to maintain optimal filtration performance.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDirect-replacement head assembly for compatible StarClear II™ C800 filter systems.\u003c\/li\u003e\n\u003cli\u003eBuilt-in air-relief vent allows trapped air to escape and supports proper filter priming.\u003c\/li\u003e\n\u003cli\u003eRobust thermoplastic construction for longevity in pool chemical environments.\u003c\/li\u003e\n\u003cli\u003eMolded mounting features designed for secure bolt-down and sealing with filter body.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePart Number: CX800C\u003c\/li\u003e\n\u003cli\u003eApplication: Head assembly (filter lid + air relief) for C800 cartridge filters.\u003c\/li\u003e\n\u003cli\u003eWeight: Approx. 3.2 lb.\u003c\/li\u003e\n\u003cli\u003eMaterial: Engineered plastic cover, pressure-rated for residential pool use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility \u0026amp; Installation Notes\u003c\/h3\u003e\n\u003cp\u003eThis filter head is designed for use with the Hayward StarClear II™ C800 cartridge filter tank. Before ordering, verify your existing filter model and ensure the bolt-hole pattern and vent placement match. Proper installation helps restore full filter performance and prevents air-lock or bypass issues.\u003c\/p\u003e\n\u003ch3\u003eInstallation Instructions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTurn off the pump, relieve any pressure in the system, and drain as needed before servicing the filter.\u003c\/li\u003e\n\u003cli\u003eRemove the old head assembly, clean the sealing flange on the filter tank, and inspect for damage or corrosion.\u003c\/li\u003e\n\u003cli\u003ePlace the new CX800C head on the tank, align bolt holes, insert bolts, and tighten evenly in a star pattern to specified torque.\u003c\/li\u003e\n\u003cli\u003ePrime the pump, restore circulation, monitor pressure, and check for any leaks or presence of air in the filter housing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTroubleshooting\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir bubbles in the filter or pump basket:\u003c\/strong\u003e Ensure the air-relief vent is open and functioning, and check that the new head is sealed properly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeak at head joint:\u003c\/strong\u003e Verify flange surface is clean, the gasket is properly installed, bolts are evenly torqued, and there is no damage to tank threads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced flow or pressure drop:\u003c\/strong\u003e Confirm all ports are correctly aligned and the head was installed correctly; check cartridge condition and tank internals.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMaintenance Tip\u003c\/h3\u003e\n\u003cp\u003eInspect the filter head, bolts, and sealing gasket during annual service. If the vent assembly shows wear or the head has cracks, replace immediately. A well-sealed head assembly prevents air-ingress and helps maintain efficient filtration. Replacing the head at first sign of damage helps avoid costly downtime or compromised water clarity.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":46797823246511,"sku":"CX800C","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6415\/2239\/files\/hayward-star-clear-ii-filter-head-dome-lid-w-air-relief-cx800c-pool-filter-parts-4274736.jpg?v=1777067756","url":"https:\/\/freshized.com\/products\/haywardstarcleariifilterheaddomelidwairreliefcx800chppcx800c","provider":"Freshized","version":"1.0","type":"link"}