{"product_id":"deringer-40-rpza-reduced-pressure-zone-assembly-backflow-valve","title":"Deringer 40 RPZA Reduced Pressure Zone Assembly Backflow Valve","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Deringer 40 RPZA Reduced Pressure Zone Assembly Backflow Valve is engineered for professionals managing fire protection and potable water systems in commercial, industrial, and institutional facilities. Its core function is to prevent backflow contamination by maintaining system integrity and consistently controlling hazardous reverse flows.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eDurable Construction\u003c\/b\u003e: Made from fusion-bonded epoxy-coated ductile iron (ASTM A536), this valve offers robust mechanical strength and outstanding resistance to corrosion, suitable for both underground and exposed environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCorrosion-Resistant Components\u003c\/b\u003e: Equipped with 300-series stainless steel springs and fasteners plus glass-filled Noryl™ check valve modules, the valve withstands chemically aggressive conditions without performance loss.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eEffective Sealing\u003c\/b\u003e: EPDM elastomer discs provide reversible and field-replaceable sealing surfaces, ensuring a reliable tight shut-off that reduces risks of backflow contamination.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRegulatory Compliance\u003c\/b\u003e: UL Listed (UL 1613), FM Approved, and meeting ASSE 1013 and AWWA C511 standards, it complies with rigorous water safety and fire protection codes, including NFPA 13 and NFPA 25.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePressure and Temperature Range\u003c\/b\u003e: Operates efficiently at pressures up to 175 PSI (12.1 bar) and temperatures between 33°F to 140°F (0.5°C to 60°C), adapting to various environmental demands.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFlexible Installation\u003c\/b\u003e: Compatible with ANSI B16.1 flanged and AWWA C606 grooved connections, supporting both horizontal and vertical flow orientations for versatile piping system integration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eAdvanced Backflow Protection\u003c\/b\u003e: Features a differential relief valve that actively discharges backpressure and back-siphonage, offering superior contamination prevention compared to standard check valves.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMaintenance-Friendly Design\u003c\/b\u003e: Includes pre-drilled test cocks for straightforward annual testing and pressure differential verification, minimizing system downtime and simplifying maintenance routines.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nBy reliably preventing water reversal, the Deringer 40 RPZA safeguards potable water systems from contamination risks inherent in fire protection networks. Its heavy-duty materials and corrosion-resistant components ensure longevity in harsh environments. The valve's compliance with multiple industry standards provides confidence in meeting code requirements. Suitable for engineers and maintenance teams, it reduces operational disruptions through easy access test features and flexible installation options. This backflow valve protects water quality while supporting the durability and reliability essential in high-demand, fire safety-critical infrastructure.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Fire Protection Parts","offers":[{"title":"2 in.","offer_id":43296312524890,"sku":"40RP-0200","price":4650.03,"currency_code":"USD","in_stock":true},{"title":"2-1\/2 in.","offer_id":43296312557658,"sku":"40RP-0250","price":4610.94,"currency_code":"USD","in_stock":true},{"title":"3 in.","offer_id":43296312590426,"sku":"40RP-0300","price":4884.58,"currency_code":"USD","in_stock":true},{"title":"4 in.","offer_id":43296312623194,"sku":"40RP-0400","price":5134.63,"currency_code":"USD","in_stock":true},{"title":"8 in.","offer_id":43296312655962,"sku":"40RP-0800","price":14939.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0655\/0637\/7818\/files\/deringer-40-red-pressure-zone-assy-152909.png?v=1777604059","url":"https:\/\/patriotsafesource.com\/products\/deringer-40-rpza-reduced-pressure-zone-assembly-backflow-valve","provider":"Patriot SafeSource","version":"1.0","type":"link"}