{"product_id":"waterco-trimline-cartridge-filter-air-release-valve-mkii-and-mkiii-620221","title":"Waterco Trimline Cartridge Filter Air Release Valve - MkII and MkIII - 620221","description":"\u003ch3\u003eWaterco Trimline Air Release Valve - MkII and MkIII\u003c\/h3\u003e\n\u003cp\u003eGenuine Waterco air release valve, part number 620221. This is the small bleed screw in the filter lid that lets trapped air out of the tank. It is the first thing you open before removing the lid, and the part that lets you purge air after starting the pump.\u003c\/p\u003e\n\u003cp\u003eReplace it when it will not seal after closing, when the thread has stripped, or when the valve weeps continuously. A leaking air bleed is also a common reason a filter will not prime properly, since it lets air back into the tank.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e620221\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer Description\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAir Release Valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWaterco\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFitted To\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFilter tank lid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuantity Per Filter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eFits\u003c\/h3\u003e\n\u003cp\u003eWaterco Trimline cartridge filters, \u003cstrong\u003eMkII and MkIII\u003c\/strong\u003e — C25, C50, C75, CC50, CC75, CC100, CC150.\u003c\/p\u003e\n\u003ch3\u003eFitting\u003c\/h3\u003e\n\u003cp\u003eShut the pump down and make certain the tank is at zero pressure before unscrewing anything from the lid. Do not overtighten on refitting — these thread into plastic and the lid is far more expensive than the valve. If the o-ring on the valve is perished, replace it at the same time (620193, or 6201931 in Viton).\u003c\/p\u003e\n\u003ch3\u003eRelated Trimline Parts\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e620193 — Air release valve o-ring\u003c\/li\u003e\n\u003cli\u003e6201931 — Air release valve o-ring, Viton\u003c\/li\u003e\n\u003cli\u003e62026 — MkIII lid o-ring, 214mm\u003c\/li\u003e\n\u003cli\u003e62021 — MkII lid o-ring, 221mm\u003c\/li\u003e\n\u003cli\u003e62024BLK — Lid lock ring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eManufacturer Manuals, Diagrams \u0026amp; Part Numbers\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eNeed exploded views, spare part numbers, diagrams, or more product information? See Waterco's \u003ca href=\"https:\/\/www.waterco.com.au\/waterco\/manuals\/pool-spa\/filters\/trimline-cartridge-filters-manual-_w99244.pdf\" rel=\"noopener\" target=\"_blank\"\u003eTrimline Cartridge Filter manual\u003c\/a\u003e.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"text-decoration: underline;\"\u003eImportant Before Ordering:\u003c\/span\u003e\u003c\/strong\u003e Please ensure you order correctly. Confirm this product is suitable before ordering. Use the manual above, seek professional assistance, or \u003ca href=\"mailto:info@hasp.com.au\"\u003econtact us\u003c\/a\u003e with photos of your existing part, model details, serial numbers, and any labels.\u003c\/p\u003e\n\u003cp\u003eAs with all products, these must be diagnosed and fitted by a qualified and experienced person.\u003c\/p\u003e\n\u003chr\u003e","brand":"Waterco","offers":[{"title":"Default Title","offer_id":48398234583229,"sku":"620221","price":12.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/waterco-trimline-cartridge-filter-air-release-valve-mkii-and-mkiii-620221-parts-925.webp?v=1788782929","url":"https:\/\/heaterandspaparts.com.au\/products\/waterco-trimline-cartridge-filter-air-release-valve-mkii-and-mkiii-620221","provider":"Heater and Spa Parts","version":"1.0","type":"link"}