The 10" Double Check Valve with OS&Y Design is engineered specifically for fire protection systems where preventing backflow contamination is critical. Ideal for commercial and industrial applications, it combines durable materials and a user-friendly design to ensure reliable water supply integrity and easy maintenance.

• Robust Construction: Made from fusion-bonded epoxy-coated ductile iron (ASTM A536) for superior corrosion resistance and mechanical strength, suitable for both underground and mechanical room installations.
• High-Quality Internal Components: Incorporates 300-series stainless steel springs and fasteners for extended service life in diverse water conditions, alongside glass-filled Noryl™ check modules that resist deformation under pressure.
• OS&Y Design: The Outside Stem and Yoke design exposes the valve stem externally, allowing clear visual confirmation of valve position and simplifying inspection and maintenance without disassembly.
• Durable Sealing: Features reversible and replaceable EPDM elastomer discs with chemical resistance tailored for fire protection systems, maintaining leak-proof performance across temperature ranges.
• Regulatory Compliance: Complies with UL 1469, FM Approval, ASSE 1015, AWWA C510, and meets NFPA 13 and NFPA 25 standards, ensuring the valve’s safety, reliability, and acceptance for fire service water control.
• Operational Versatility: Rated for maximum operating pressure of 175 PSI (12.1 bar) and temperature range of 33°F to 140°F (0.5°C to 60°C), providing compatibility with most municipal fire water supplies and industrial systems.
• Installation Flexibility: Available with ANSI B16.1 flanged end connections for secure, standardized piping interfaces, and supports both horizontal and vertical upward flow orientations without performance loss.

This double check valve effectively prevents hazardous backflow from contaminating potable water or fire sprinkler systems, a critical safeguard in fire protection infrastructure. Its sturdy construction minimizes maintenance needs and downtime, and the OS&Y design streamlines valve monitoring and operation. Whether installed underground or in mechanical rooms, it ensures uninterrupted fire protection system readiness by maintaining water purity and meeting stringent regulatory requirements.