{"product_id":"pentair-2-3-8-automatic-air-relief-assembly","title":"Pentair 2 3\/8\" Automatic Air Relief Assembly","description":"\u003cp\u003eThe Pentair 2 3\/8\" Automatic Air Relief Assembly (part number 98201800) is a specialized internal safety component engineered for various heavy-duty Pentair commercial and residential sand, cartridge, and D.E. filtration systems. Situated at the absolute highest point inside the filter tank, this vertical tube assembly features an integrated air-venting mechanism designed to automatically bleed off small pockets of trapped air that naturally accumulate during normal pump filtration cycles. By continuously exhausting this air back into the return plumbing, it prevents the formation of dangerous high-pressure air pockets inside the filter shell, ensuring optimal hydraulic flow and maintaining system stability. Molded from a high-density, chemical-resistant polymer composite to survive the continuous chemical exposure and turbulent water movement inside a pressurized tank, this assembly comes equipped with a fine internal screen mesh to keep debris and filter media from clogging the line. Because of its specialized, elongated structure yet lightweight plastic composition, the complete automatic air relief assembly carries an individual product and shipping weight of approximately \u003cb\u003e0.30 pounds\u003c\/b\u003e (about 4.8 ounces).\u003c\/p\u003e","brand":"Commercial Pool and Spa Supplies","offers":[{"title":"Default Title","offer_id":53322498932847,"sku":"261003","price":219.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/3785\/3807\/files\/75281_grande_09e6ba8a-1819-4c7c-8479-dadf70d64ed5.webp?v=1782140397","url":"https:\/\/commercialpoolandspasupplies.com\/products\/pentair-2-3-8-automatic-air-relief-assembly","provider":"Commercial Pool and Spa Supplies ","version":"1.0","type":"link"}