The 6" Fig 30GX Double Check Detector Assembly with OS&Y valve is a precision-engineered backflow prevention device designed specifically for fire protection systems. Tailored for fire protection consultants and system installers, it ensures the safety of potable water supplies by preventing contamination during sprinkler operation, while maintaining compliance with critical fire safety standards.

• Durable Construction: Made from ASTM A126 Class B cast iron, the body of the assembly offers superior mechanical strength and corrosion resistance, making it reliable for long-term use in pressurized water environments.
• Reliable Internal Components: Equipped with stainless steel check valves and springs, this assembly ensures smooth, durable operation with excellent resistance to corrosion essential for consistent backflow prevention.
• Effective Sealing: The nitrile rubber (NBR) seating delivers a secure and pressure-tight seal, preventing any backflow leakage when the fire sprinkler system is active.
• OS&Y Gate Valve Design: Features an outside stem and yoke (OS&Y) valve with an exposed stem to provide easy, visual confirmation of whether the valve is open or closed, speeding up inspections and maintenance.
• Certified Compliance: Meets stringent standards including UL 312, FM 1120, NFPA 13, and NFPA 24, ensuring the assembly adheres to recognized fire protection regulations for both commercial and residential applications.
• Pressure Rating and Connections: Rated for up to 175 psi (12.1 bar) max working pressure, with 6-inch flanged ends compliant with ANSI B16.1 Class 125 for seamless installation into existing fire sprinkler systems.

By integrating the Fig 30GX Double Check Detector Assembly, system installers gain a dependable solution to prevent cross-contamination risks between fire sprinkler and potable water systems. This robust assembly minimizes downtime and maintenance needs while offering straightforward valve status monitoring through the exposed OS&Y stem. Its design suits moderate to high-pressure fire protection networks, providing enhanced system reliability and peace of mind in critical safety infrastructure.