{"product_id":"3-double-check-backflow-preventor-valve-with-osy-fire-protection-system-by-astm","title":"3\" Double Check Backflow Preventor Valve with OSY Fire Protection System by ASTM","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe 3\" Double Check Backflow Preventor Valve with OSY Fire Protection System by ASTM is engineered for commercial and industrial fire protection and plumbing applications where maintaining potable water purity is critical. Designed to prevent contamination by backflow during fire events or routine maintenance, this assembly combines robust materials with precise functionality to meet rigorous safety standards.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eDurable Construction\u003c\/b\u003e: Crafted from ASTM A536 ductile iron for superior strength and corrosion resistance, ensuring reliable performance in demanding fire protection environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCorrosion-Resistant Internals\u003c\/b\u003e: Internal check valves and springs made from 300-series stainless steel deliver long-lasting operation without degradation, even in wet conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOS\u0026amp;Y Gate Valves\u003c\/b\u003e: Outside Screw and Yoke valves provide clear visual indication of open or closed positions, enabling effective system isolation during inspections or emergencies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eEPDM Sealing Elements\u003c\/b\u003e: High-quality elastomers compatible with potable water resist wear and maintain sealing integrity over a wide temperature range typical of fire protection systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRegulatory Compliance\u003c\/b\u003e: UL 1469 listed, FM approved, and designed to meet NFPA 13, 14, and 25 standards, ensuring adherence to fire protection and plumbing codes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOperational Range\u003c\/b\u003e: Rated for pressures up to 175 PSI (12.1 bar) and temperatures between 33°F and 140°F (0.5°C to 60°C), suitable for both horizontal and vertical installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFlexible Installation\u003c\/b\u003e: Available with ANSI B16.1 flanged connections or grooved ends per AWWA C606 for compatibility with various piping layouts in commercial and institutional settings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBuilt-in Test Ports\u003c\/b\u003e: Facilitates differential pressure monitoring as required for regulatory testing and maintenance, reducing downtime and ensuring system reliability.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nThis backflow preventer valve safeguards drinking water by effectively stopping contaminants from reversing flow into potable supply lines during fire system activation or maintenance. Its rugged construction and corrosion-resistant components extend service life, reducing replacement frequency and maintenance costs. The integrated OS\u0026amp;Y shutoff valves offer enhanced control and facilitate partial system isolation—minimizing disruptions and water loss during repairs. Ideal for building managers, fire protection contractors, and plumbing professionals who must comply with strict safety codes, this valve supports peace of mind in critical fire protection infrastructure by ensuring water quality and operational reliability.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Fire Protection Parts","offers":[{"title":"Default Title","offer_id":42419280183376,"sku":"C200NOS\u0026Y-0300","price":74367.0,"currency_code":"ZAR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0242\/9940\/5392\/files\/3-double-check-assembly-n-pat-wosy-441376.jpg?v=1779397584","url":"https:\/\/store.zoellerpumps.co.za\/products\/3-double-check-backflow-preventor-valve-with-osy-fire-protection-system-by-astm","provider":"store.water-services.us","version":"1.0","type":"link"}