{"product_id":"pentairwaterpoolandspainc_59000400","title":"Pentair High Flow Internal Air Relief Kit | Titan Vertical Grid D.E. Filter | 59000400","description":"\u003cp\u003eThe Pentair High Flow Internal Air Relief Kit (59000400) is the OEM upgrade kit for the air bleed assembly on the Titan Vertical Grid D.E. Filter manifold.\u003c\/p\u003e\n\n\u003cp style=\"background-color: #fff3cd; border: 2px solid #FFEAA7; padding: 15px; border-radius: 5px; margin: 15px 0; color: #856404;\"\u003e\n\u003cstrong\u003e⚠️ IMPORTANT: THIS IS A KIT — NOT A SINGLE COMPONENT\u003c\/strong\u003e\u003cbr\u003e\nThis listing is a kit containing the complete high flow internal air relief upgrade assembly. Confirm all kit contents against your Titan filter's parts diagram before installation.\n\u003c\/p\u003e\n\n\u003cp\u003eThe internal air relief assembly on the Titan manifold allows trapped air to purge from the filter tank during startup and after backwash cycles, maintaining proper water flow through the D.E. grids. This high flow upgrade kit replaces the original air relief components in the manifold top with an improved configuration designed to deliver faster, more complete air evacuation from the filter vessel.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin: 20px 0; border: 1px solid #ccc;\"\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003ePentair Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e59000400\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003ePart Name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eHigh Flow Internal Air Relief Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eQuantity Included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eKit (1 kit per listing — see kit callout above for contents)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eTitan Vertical Grid D.E. Filter — manifold top air bleed upgrade\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePro Tip\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, cross-reference part number 59000400 against the exploded diagram in your Titan filter's installation manual to confirm this kit matches your manifold version. The air relief assembly sits at the top of the manifold — inspect the existing fitting for cracking or mineral buildup while the filter is open, as these are the most common causes of air lock and pressure fluctuation in D.E. systems.\u003c\/p\u003e\n\n\u003c!-- wft:processed:manual:2026-04-04 --\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":53932867485971,"sku":"59000400","price":148.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0920\/0687\/5411\/files\/pentair-high-flow-internal-air-relief-kit-titan-vertical-grid-d-e-filter-59000400-2.webp?v=1780912239","url":"https:\/\/poolaroo.com\/products\/pentairwaterpoolandspainc_59000400","provider":"Poolaroo","version":"1.0","type":"link"}