4" Dbl Check Det Less Os&Y

The Zurn Wilkins 4" Double Check Detector Assembly (DCDA) without OS&Y is a critical component for safeguarding potable water supplies in fire protection systems. This specialized backflow preventer is designed for installation in applications where local authorities identify a non-health hazard risk. It effectively prevents the backflow of fire protection system substances or other pollutants from contaminating the main water supply due to backpressure or backsiphonage.

• 4-Inch Size: Compatible with standard commercial piping and sized to accommodate the high flow demands of fire protection systems without pressure loss.
• Double Check Valve Mechanism: Features two independent, spring-loaded check valves that create a reliable barrier against backflow, enhancing contamination control.
• Detector Bypass: Includes a metered bypass system to detect leaks and unauthorized water usage, a crucial feature for fire sprinkler and standpipe systems.
• Corrosion-Resistant Construction: Built with a durable body, often stainless steel or epoxy-coated ductile iron, and internal components like stainless steel springs and fasteners, to resist corrosion and ensure longevity in demanding environments.
• Lead-Free Compliant: Meets current lead-free requirements for potable water applications.
• Versatile Installation: Designed with a short lay length for compact and versatile installation in either horizontal or vertical flow-up positions.
• Maximum Working Pressure: Rated for a maximum working pressure of 175 PSI (12.06 bar), accommodating high flow rates common in fire sprinkler systems.
• Compliance Standards: Meets various industry standards, including UL, FM, ASSE, and AWWA, ensuring adherence to fire protection codes and potable water safety.

This Zurn Wilkins Double Check Detector Assembly provides a robust and compliant solution for facilities prioritizing water safety and system integrity. By integrating backflow prevention and flow detection, it safeguards clean water sources from potential contamination while enabling early identification of leaks or unauthorized usage within your fire protection system. Its durable construction and maintenance-friendly design contribute to reliable operation and reduced downtime, making it a practical choice for ensuring both water safety and continuous fire system functionality.