3" Febco 850 Double Check OSY Valve for Fire Protection

The 3" Febco 850 Double Check OSY Valve is designed for fire protection professionals seeking a reliable solution to prevent backflow contamination in commercial and residential fire sprinkler systems. Engineered to deliver long-term durability and easy maintenance, this valve ensures water safety while complying with critical fire code standards.

• Material Construction: Main body crafted from ductile iron (ASTM A536) with a fusion-bonded epoxy coating for enhanced corrosion resistance in harsh fire protection environments.
• Internal Components: Springs and fasteners made of 300-series stainless steel, providing corrosion resistance and dependable operation under varying conditions.
• Valve Design: Features an Outside Screw & Yoke (OS&Y) configuration, allowing for clear visual confirmation of valve position to improve inspection accuracy and simplify maintenance.
• Sealing Technology: Equipped with precision-cut, replaceable elastomeric seats engineered to maintain a positive shutoff, effectively preventing backflow contamination of fire system water.
• Compliance and Certification: UL Listed per UL 1469, FM Approved, meets ASSE 1015 standards, and conforms to AWWA C510, ensuring adherence to stringent fire protection regulations and water safety codes.
• Operational Parameters: Rated for working pressures up to 175 PSI (12.1 bar) and a temperature range of 33°F to 140°F (0.5°C to 60°C), compatible with a wide variety of fire protection system demands.
• Installation Flexibility: Available with ANSI B16.1 flanged ends, supporting both horizontal and vertical (upward flow) installations to suit diverse piping configurations.
• Maintenance Features: Integrated test ports facilitate straightforward differential pressure testing and routine inspections required by fire codes such as NFPA 13 and NFPA 25.

By installing the 3" Febco 850 Double Check OSY Valve, fire protection managers and engineers effectively safeguard potable water supplies from contamination caused by backflow, a critical concern in non-health hazard systems. Its robust construction and corrosion-resistant materials extend valve life even in moist, fluctuating temperature conditions typical of fire sprinkler environments. The clear OS&Y design supports quick system assessments and regulatory compliance checks, reducing downtime and maintenance complexity. This valve suits fire prevention setups where maintaining system integrity and code compliance is paramount, offering peace of mind for property owners and system operators alike.