The 4" Double Check Assembly with OS&Y Valve is a critical backflow preventor designed specifically for fire protection systems. Ideal for both commercial and residential installations, it ensures safe water supply by preventing backflow contamination while offering ease of operation and maintenance.

• Durable Construction: Built from high-grade materials engineered to withstand high pressure and harsh environments, ensuring longevity and reliable function in fire protection setups.
• OS&Y Valve Integration: Features an Outside Screw and Yoke valve which provides clear visual indication of valve position and allows for precise control and easy closure during maintenance or emergencies.
• 4-Inch Size: Sized to accommodate high flow demands typical in fire protection systems, ensuring seamless water supply without pressure loss or system disruption.
• Double Check Valve Mechanism: Prevents backflow of contaminated water by employing two independent check valves, effectively safeguarding potable water supplies from pollutants and hazards.
• Compliance Focused: Designed to meet fire safety regulations and plumbing codes to support building inspection approvals and maintain system integrity.
• Maintenance Friendly Design: The assembly allows for straightforward inspection and servicing without system shutdown, reducing downtime and maintenance costs.

This backflow preventor ensures your fire protection system remains compliant and functional, protecting clean water sources from potential contamination caused by backflow. Its robust design and OS&Y valve feature deliver clear operation status and efficient control, crucial in emergency scenarios. Whether installed in commercial buildings or residential facilities, this assembly provides a reliable first line of defense, improving system safety and user confidence. Easy maintenance access means facility managers and plumbers can quickly verify function and perform upkeep, minimizing the risk of system failure. Trust this carefully engineered backflow preventor to secure water supply integrity and uphold fire protection standards.