{"product_id":"nibco-nl7500b-check-valve-1-1-4-in-y-pattern-fnpt-200-wog","title":"Nibco NL7500B Check Valve 1-1\/4 in Y-pattern Fnpt 200 Wog","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe NIBCO NL7500B is a Y-pattern check valve designed for use in plumbing and mechanical piping systems where backflow prevention is required. Built with a bronze body and a nitrile butadiene rubber (NBR) seal, this valve provides reliable one-directional flow control rated at 200 WOG (water, oil, gas). The 1-1\/4 inch pipe size and FNPT x FNPT end connections make it compatible with standard threaded pipe installations. Weighing 2.207 pounds, the NL7500B is a compact, durable unit suited for commercial and residential mechanical rooms, boiler systems, and general-purpose plumbing service lines. Licensed plumbers and pipefitters are the primary installers.\u003c\/p\u003e\u003cp\u003eThis check valve is intended for use in systems where preventing reverse flow is critical, such as domestic water supply lines, hydronic heating systems, and low-pressure fluid distribution. The Y-pattern body design offers lower pressure drop compared to traditional swing-style check valves, making it a practical choice in systems with continuous or variable flow. It is well-suited for installation in both horizontal and vertical pipe runs where the 200 WOG pressure rating meets system requirements.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eY-pattern body design for reduced pressure drop across the valve\u003c\/li\u003e\n\u003cli\u003eBronze body construction for corrosion resistance in water and fluid service\u003c\/li\u003e\n\u003cli\u003eNitrile butadiene rubber (NBR) seal material for compatibility with water, oil, and gas applications\u003c\/li\u003e\n\u003cli\u003eFNPT x FNPT end connections for standard threaded pipe installation\u003c\/li\u003e\n\u003cli\u003e200 WOG pressure rating suitable for a broad range of low-to-medium pressure systems\u003c\/li\u003e\n\u003cli\u003e1-1\/4 inch pipe size for mid-range residential and light commercial piping\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-installation check valve for 1-1\/4 inch threaded pipe systems rated at or below 200 WOG in plumbing, HVAC hydronic, and general mechanical piping applications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a licensed plumber in accordance with applicable local plumbing codes and the IPC. Shut off system pressure and drain the line before removing an existing valve or making new connections. Use thread sealant or PTFE tape on all FNPT connections and avoid over-tightening, which can crack threaded fittings. Verify flow direction markings on the valve body before final assembly to ensure correct orientation.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Size\u003c\/strong\u003e: 1-1\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Type\u003c\/strong\u003e: Y-Pattern Check Valve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Connection\u003c\/strong\u003e: FNPT x FNPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Rating\u003c\/strong\u003e: 200 WOG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Material\u003c\/strong\u003e: Bronze\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeal Material\u003c\/strong\u003e: Nitrile Butadiene Rubber (NBR)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 2.207 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: NIBCO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: NL7500B\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NIBCO","offers":[{"title":"Default Title","offer_id":51539493060914,"sku":"NL7500B","price":329.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a07ec0e1997c37ac34dffa2dc55e204e_df7b3baf-2dc8-4a2b-bf47-e172ec809f99.jpg?v=1785841649","url":"https:\/\/voomisupply.com\/products\/nibco-nl7500b-check-valve-1-1-4-in-y-pattern-fnpt-200-wog","provider":"Voomi Supply","version":"1.0","type":"link"}