{"product_id":"pentair-170028-air-bleed-assembly-420-cnc-plus-170028","title":"Pentair 170028 Air Bleed Assembly - 420 CNC Plus, 170028","description":"\u003cp\u003e\u003cstrong\u003eWhat This Part Is Used For\u003c\/strong\u003e\u003cbr\u003e The Pentair 170028 Air Bleed Assembly is used on compatible 420 CNC Plus filters to vent trapped air from the tank. It supports safe and consistent system pressurization. \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy This Part Matters\u003c\/strong\u003e\u003cbr\u003e Air inside the tank can reduce filtration efficiency and cause inaccurate pressure readings. A damaged Assembly may leak under pressure. Replacing the air bleed restores dependable filter operation. \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features and Specifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePentair manufacturer part number: 170028\u003c\/li\u003e\n\u003cli\u003eAir bleed Assembly\u003c\/li\u003e\n\u003cli\u003eFor 420 CNC Plus filters\u003c\/li\u003e\n\u003cli\u003eManual air release function\u003c\/li\u003e\n\u003cli\u003eReplacement filter component\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eInstallation and Fitment Guidance\u003c\/strong\u003e\u003cbr\u003e Shut off pump and relieve pressure before servicing. Inspect O-rings and sealing surfaces during installation. Confirm by manufacturer part number before ordering. \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAbout the Pentair Brand\u003c\/strong\u003e\u003cbr\u003e Pentair CNC Plus filters are used in high-capacity residential and commercial systems. Their air relief components are built for direct fit and compatibility. Pentair replacement parts help maintain safe filtration. \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon Service Context\u003c\/strong\u003e\u003cbr\u003e Air bleed assemblies are often replaced during filter rebuilds or when leaks develop at the tank top. They are commonly serviced during annual cleanings. \u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":52078580007186,"sku":"170028","price":43.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/2279\/1186\/files\/PEN170028_0.jpg?v=1772562042","url":"https:\/\/www.aquaterrabackyard.com\/products\/pentair-170028-air-bleed-assembly-420-cnc-plus-170028","provider":"Aqua Terra Backyard","version":"1.0","type":"link"}