The 10" Double Check Assembly with OS&Y Valve is engineered for commercial and industrial fire protection and plumbing systems that demand reliable backflow prevention. Designed with durable materials and certified to stringent industry standards, it provides a trusted solution to safeguard potable water supplies from contamination.

• Robust Construction: Constructed from fusion-bonded epoxy-coated ductile iron (ASTM A536) for enhanced corrosion and mechanical wear resistance in harsh environments.
• Durable Internal Components: Features glass-filled Noryl™ check modules combined with 300-series stainless steel springs and fasteners to ensure long-lasting performance and minimal maintenance.
• Replaceable Sealing Elements: Equipped with reversible and replaceable EPDM elastomer discs that maintain a positive seal to prevent backflow reliably over time.
• Certified Compliance: UL 1469, FM approval, ASSE 1015, and AWWA C510 certified, ensuring compliance with fire protection and potable water safety regulations.
• Operational Versatility: Supports system pressures up to 175 PSI and operates efficiently across temperatures ranging from 33°F to 140°F (0.5°C to 60°C).
• Flexible Installation: Compatible with both flanged ANSI B16.1 ends and grooved AWWA C606 ends, suitable for horizontal or vertical configurations with upward flow orientation.
• Maintenance-Friendly Design: Incorporates an Outside Screw & Yoke (OS&Y) valve for positive isolation during servicing and pre-drilled test cocks for straightforward annual testing and pressure verification.

This assembly is ideal for facilities looking to enhance fire protection systems with reliable backflow prevention that prioritizes water safety and regulatory compliance. By minimizing pressure drops and allowing easy maintenance without shutting down entire systems, it supports efficient fire system activation and routine flow conditions. Whether installed in municipal buildings or industrial complexes, it protects potable water against contamination while meeting NFPA 13 and NFPA 25 requirements for sprinkler system installation and maintenance.