The 3" Double Check Backflow Preventer Valve GXG OSY Model is specifically engineered for commercial and industrial fire protection systems that demand reliable backflow prevention and straightforward system isolation. Designed for fire protection contractors, plumbing engineers, and facility managers, this valve assembly ensures compliance with safety standards while simplifying maintenance in critical water control applications.

• Durable Construction: Crafted from fusion-bonded epoxy-coated ductile iron (ASTM A536), offering exceptional corrosion resistance and long service life in both above-ground and underground environments.
• Internal Components: Features 300-series stainless steel springs and fasteners inside the check valves to resist wear, corrosion, and chemical degradation.
• GXG OS&Y Gate Valve: Includes an Outside Screw and Yoke design with a rugged stem and yoke assembly that provides visible valve position and smooth manual operation for precise flow isolation.
• Compliance and Certifications: UL Listed under UL 1469, FM Approved, and certified to ASSE 1015 standards, meeting rigorous fire service water control and backflow prevention regulations.
• Pressure and Installation: Rated for maximum operating pressures up to 175 PSI; suitable for both horizontal and vertical piping with upward flow orientation in fire sprinkler systems.
• Versatile Connection Options: Available with Grooved (AWWA C606) and Flanged (ANSI B16.1) connections, fitting standard 3-inch fire sprinkler piping configurations.
• Code-Ready Design: Meets applicable sections of NFPA 13 and NFPA 25 for installation, inspection, and maintenance, ensuring seamless integration into safety-focused fire suppression infrastructure.

This backflow preventer valve assembly protects potable water supplies by preventing contaminants from flowing backward into the system, minimizing health risks and potential safety code violations. Its robust materials and corrosion-resistant design reduce maintenance frequency and extend operational life, enhancing system reliability. The clear visual indication of valve status and the ease of operation streamline routine testing and repair tasks, saving valuable time for facility managers and contractors. Whether installed in mechanical rooms or underground vaults, this valve supports diverse system layouts, providing dependable performance essential for continuous fire protection readiness.