{"product_id":"672-3150","title":"Waterway Heavy Duty 3\/4\" FPT x 3\/4\" Barb Air Relief Valve (672-3150)","description":"\u003cp\u003eThe \u003cstrong\u003eWaterway Heavy Duty 3\/4\" FPT x 3\/4\" Barb Air Relief   Valve\u003c\/strong\u003e (manufacturer part \u003cstrong\u003e672-3150\u003c\/strong\u003e) is a purpose-selected replacement or equipment component for compatible pool, spa or aquatic installations. Its specific construction and application help technicians and owners maintain the intended equipment arrangement instead of making an uncertain substitution based only on appearance. When planning a repair, identifying the exact installed assembly is as important as identifying the replacement part itself.\u003c\/p\u003e\u003ch3 style=\"margin:16px 0 5px;padding:0;\"\u003eSafe removal of trapped air\u003c\/h3\u003e\u003cp style=\"margin-top:0;\"\u003eAir-relief components help technicians manage trapped air in compatible filtration equipment during filling and service. Air pockets can affect circulation and pressure behavior, making the original relief arrangement important to preserve. The replacement must match both the physical connection and its intended location in the filter assembly.\u003c\/p\u003e\u003ch3 style=\"margin:16px 0 5px;padding:0;\"\u003eInstallation, Compatibility \u0026amp; Care\u003c\/h3\u003e\u003cp style=\"margin-top:0;\"\u003eSwitch off equipment and follow the filter manufacturer’s depressurization and startup procedure before handling any pressure-related part. Check threads, seals and operating mechanisms for deterioration; overtightening plastic fittings can damage the housing. Do not bypass a required relief component or substitute a generic fitting without approval.\u003c\/p\u003e\u003cp\u003eA correct replacement also protects the time invested in diagnosing and servicing the surrounding equipment. The best results come from comparing the old part with its service diagram, planning required accessories before disassembly, and checking the restored system under normal operating conditions. Where the equipment is part of a pressurized, submerged or electrically powered installation, follow the manufacturer’s shutdown, isolation and recommissioning procedures; a physically fitting component is not automatically approved for every application.\u003c\/p\u003e\u003ch3 style=\"margin:16px 0 5px;padding:0;\"\u003ePractical Features \u0026amp; Service Considerations\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePriming procedure: use the manufacturer’s air-release instructions.\u003c\/li\u003e\n\u003cli\u003eThread compatibility: match the precise female or male mating connection.\u003c\/li\u003e\n\u003cli\u003eSeal condition: inspect specified O-rings and mating surfaces.\u003c\/li\u003e\n\u003cli\u003ePressure safety: never service the part while the filter is pressurized.\u003c\/li\u003e\n\u003cli\u003eInstallation fit: ensure clear access for operation and maintenance.\u003c\/li\u003e\n\u003cli\u003ePart distinction: separate valve-only and complete assembly listings.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eBefore ordering:\u003c\/strong\u003e Compare the original equipment label and service diagram with \u003cstrong\u003e672-3150\u003c\/strong\u003e. Verify any accessories or consumable hardware needed for the job; this product should not be mistaken for an entire system unless the listing expressly identifies a complete system.\u003c\/p\u003e","brand":"Waterway Plastics","offers":[{"title":"Default Title","offer_id":49882354221211,"sku":"672-3150","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1751\/9347\/files\/noimage_8295827e-ea6f-498f-997e-8082efae4ba7.jpg?v=1792629162","url":"https:\/\/www.bathandspaparts.com\/products\/672-3150","provider":"Bath and Spa Parts Online","version":"1.0","type":"link"}