{"product_id":"rw-beckett-cu7-check-valve-3-8-inch-tube-brass","title":"Rw Beckett cu7 Check Valve 3\/8 Inch Tube Brass","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe RW BECKETT cu7 is a brass check valve with a 3\/8-inch nominal tube connection designed for oil burner and fuel supply applications. Check valves in this service class prevent backflow in fuel lines, protecting pump components and maintaining prime in the supply system. The brass body provides corrosion resistance suitable for fuel oil service. This valve is installed by licensed oil burner technicians and plumbers working on fuel delivery systems where one-directional flow control is required.\u003c\/p\u003e\n\u003cp\u003eThe cu7 is sized for 3\/8-inch tube connections, making it a standard fit for residential and light commercial oil burner fuel supply lines. It is typically installed in the suction or return side of a fuel oil system to maintain line pressure and prevent siphoning or backflow when the burner is off. The tube connection style allows direct integration with copper tubing commonly used in oil fuel systems.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBrass body construction for corrosion resistance in fuel oil service\u003c\/li\u003e\n  \u003cli\u003e3\/8-inch nominal tube connection for direct copper tubing integration\u003c\/li\u003e\n  \u003cli\u003eOne-directional flow control prevents backflow in fuel supply lines\u003c\/li\u003e\n  \u003cli\u003eCompact design suited for tight equipment-room installations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement check valve for 3\/8-inch tube connection fuel supply systems, consistent with RW BECKETT oil burner installation requirements.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed oil burner technician or plumber in accordance with applicable local and NFPA 31 fuel oil piping codes. Shut off the fuel supply and depressurize the line before removing or installing any check valve. Verify flow direction arrow on the valve body before final installation. Do not overtighten tube fittings, as brass fittings can crack under excessive force.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody Material\u003c\/strong\u003e: Brass\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Type\u003c\/strong\u003e: Tube\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNominal Size\u003c\/strong\u003e: 3\/8 inches\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: RW BECKETT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: cu7\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RW BECKETT","offers":[{"title":"Default Title","offer_id":51138651160882,"sku":"CU7","price":22.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/305531084.jpg?v=1778261065","url":"https:\/\/voomisupply.com\/products\/rw-beckett-cu7-check-valve-3-8-inch-tube-brass","provider":"Voomi Supply","version":"1.0","type":"link"}