2-1/2" Reduced Pressure Zone Assembly With OSY Valve

The 2-1/2" Reduced Pressure Zone Assembly with OSY Valve by Watts Regulator Co is a specialized backflow preventer designed for residential fire protection systems. It ensures safe, uncontaminated potable water supply while maintaining the reliability and efficiency of fire sprinkler networks.

• Durable Construction: Heavy-duty brass main body with a corrosion-resistant finish provides longevity in residential mechanical settings, especially in chilled or humid environments.
• Advanced Internal Components: Stainless steel springs and fasteners resist mineral buildup and corrosion, enhancing the assembly’s performance over time.
• Dual Check Valves: Two independent check modules offer redundant backflow prevention to minimize risks of water contamination.
• Precision Relief Valve: Equipped with EPDM seating to consistently discharge excess pressure, preventing potential damage from pressure buildup downstream.
• OS&Y Valve Design: A robust outside stem and yoke valve facilitates precise flow control and allows for easier maintenance without shutting down the entire system.
• Regulatory Compliance: Certified by UL 411 and FM Approval, meets ASSE Standard 1013, and supports NFPA 13 and NFPA 25 codes for fire sprinkler system installation and maintenance.
• Operational Range: Rated for up to 175 PSI and able to operate between 33°F and 140°F, suitable for typical residential water and fire protection system pressures and temperatures.
• Installation Versatility: Designed for horizontal piping layouts with NRS OS&Y valve connections, making it compatible with standard residential plumbing installations and simplifying integration.

This reduced pressure zone assembly is essential for fire sprinkler contractors, maintenance professionals, and municipal water authorities requiring reliable protection against backflow in residential risk zones. By preventing contamination and managing pressure efficiently, it enhances water safety and system longevity. The integrated OS&Y valve allows for isolated maintenance, reducing downtime and operational disruptions. Its compliance with multiple stringent standards ensures hassle-free regulatory acceptance, making it a practical and dependable choice over simpler check valves or assemblies lacking dual protection and precise flow control.