{"product_id":"pentair-tank-lid","title":"Pentair Tank Lid","description":"\u003cp\u003eThe term \u003cb data-path-to-node=\"0\" data-index-in-node=\"9\"\u003ePentair Tank Lid\u003c\/b\u003e refers to the heavy-duty upper pressure domes or replacement top tank shells engineered for Pentair’s flagship lines of pool and spa filters, including the Clean \u0026amp; Clear Plus cartridge, FNS Plus vertical D.E., and Sta-Rite System 2 or System 3 series. Molded from rugged, UV-stabilized, fiberglass-reinforced polypropylene or dense composite resins, these lids are built to safely withstand continuous internal hydraulic pressures up to 50 PSI. The apex of the dome typically features a molded, threaded port to accept a manual high-flow air relief valve and diagnostic pressure gauge, while the wide bottom rim is designed to seat against a main tank O-ring, secured tightly to the lower tank half by either a metal clamp band assembly, dual quick-clip locks, or a composite Posi-Lok™ collar. Depending on whether you are replacing a smaller vertical sand filter closure cap or a massive, broad-dome upper shell for a multi-element filtration system, the actual product weight can vary dramatically from \u003cb data-path-to-node=\"0\" data-index-in-node=\"1031\"\u003e2.0 to 28.0 pounds\u003c\/b\u003e, resulting in highly variable shipping weights due to the large, oversized protective boxes required to prevent the composite sealing lips from warping or fracturing during transit.\u003c\/p\u003e","brand":"Commercial Pool and Spa Supplies","offers":[{"title":"Default Title","offer_id":53762639167599,"sku":"178810","price":891.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/3785\/3807\/files\/images_1_43a8b9bc-ca0b-4e69-9b13-cb96b4fdcdce.jpg?v=1783609079","url":"https:\/\/commercialpoolandspasupplies.com\/products\/pentair-tank-lid","provider":"Commercial Pool and Spa Supplies ","version":"1.0","type":"link"}