{"product_id":"plastic-air-relief-tube-c1200-c1100-s244s-s311","title":"Hayward Plastic Air Relief Tube C1200\/C1100\/S244S\/S311, CX1100Z4","description":"\u003cp\u003eThe Hayward CX1100Z4 is the plastic air relief tube used in the C1200, C1100, S244S and S311 filters. It is the genuine Hayward replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy it matters\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eEvery filter traps some air at the top of the tank when it refills. The relief tube is the path that air takes to reach the manual relief valve on the lid. If the tube is cracked, snapped or missing, the valve vents from the wrong place, air stays trapped, the pressure gauge reads high and the filter never runs at its proper flow.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitting\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe tube sits under the filter head, so the lid has to come off to reach it. It is a good time to look over the head o-ring, since it is already exposed and it is the other common cause of a filter that will not hold pressure.\u003c\/p\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":48628938899668,"sku":"HAY-051-1745","price":23.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_32fa8f8e-cab6-457e-8bff-713098914c10.png?v=1788758224","url":"https:\/\/www.activepoolsupply.com\/products\/plastic-air-relief-tube-c1200-c1100-s244s-s311","provider":"Active Pool Supply","version":"1.0","type":"link"}