{"product_id":"pentair-black-manual-air-relief-assembly-273550z","title":"Pentair Black Manual Air Relief Assembly | 273550Z","description":"\u003ch2\u003ePentair Black Manual Air Relief Assembly |  273550Z\u003c\/h2\u003e\n\u003cp\u003eOEM Pentair manual air relief assembly. Releases trapped air to maintain pressure and efficient filtration.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOEM replacement for Pentair FNS, Nautilus Plus, and SMBW 4000 series filters.\u003c\/li\u003e\n\u003cli\u003eManual air relief valve removes trapped air from filter tank.\u003c\/li\u003e\n\u003cli\u003eIntegrated pressure gauge for system monitoring.\u003c\/li\u003e\n\u003cli\u003eImproves filtration efficiency and startup performance.\u003c\/li\u003e\n\u003cli\u003eDurable construction for long service life.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe Pentair Black Manual Air Relief Assembly is designed to maintain proper pressure and airflow inside your pool filtration system. By manually releasing trapped air, it helps ensure consistent water flow and efficient filtration performance.\u003c\/p\u003e\n\u003cp\u003eThis OEM Pentair assembly combines an air relief valve with a pressure gauge, allowing you to purge air and monitor system pressure in one unit. It is commonly used on Pentair FNS, Nautilus Plus, and SM\/SMBW 4000 series D.E. filters.\u003c\/p\u003e\n\u003cp\u003eBuilt for durability, it withstands exposure to pool chemicals and continuous pressure, making it a reliable replacement for worn or malfunctioning air relief assemblies.\u003c\/p\u003e\n\u003ch3\u003ePro Tip\u003c\/h3\u003e\n\u003cp\u003eAlways open the air relief valve during startup until water flows steadily. This prevents air pockets that can reduce filtration efficiency.\u003c\/p\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003cp\u003eTurn off system and relieve pressure before installation. Thread assembly securely and ensure gauge is visible for easy monitoring. Do not overtighten.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":42369601470549,"sku":"273550Z","price":95.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0105\/0837\/0005\/files\/Pentair_0f93e062-3562-4df6-b940-a989a0931405.webp?v=1775329224","url":"https:\/\/www.epoolsupply.com\/products\/pentair-black-manual-air-relief-assembly-273550z","provider":"ePoolSupply","version":"1.0","type":"link"}