Zurn Wilkins 375AST 3-Inch Reduced Pressure Backflow Assembly with Grooved Butterfly Valves

The Zurn Wilkins 375AST is a 3-inch reduced-pressure principle backflow prevention assembly engineered for high-hazard cross-connection control in fire protection systems and commercial water supply lines. Installed inline to protect potable water supplies from contamination, this assembly relies on a differential pressure relief valve located between two independently operated check valves to isolate backpressure and backsiphonage effectively. To maintain compliance with NFPA 13, NFPA 14, and NFPA 25 inspection, testing, and maintenance mandates, this complete unit incorporates integrated supervisory switches for reliable valve position monitoring during emergency water supply activation.

This assembly provides a fully integrated solution featuring grooved-end butterfly shutoff valves in a BFG configuration, allowing fast mechanical connections directly into grooved piping layouts. Built with a corrosion-resistant stainless-steel body, it provides long-term durability in demanding plumbing and fire safety environments.

• Stainless Steel Body: Resists corrosion to extend service life in harsh plumbing and fire protection environments.
• Grooved-End Butterfly Valves: Speeds up mechanical installations with standard grooved connections.
• Integrated Supervisory Switches: Monitors valve status remotely to support life safety compliance.
• Complete Assembly: Ships as an entire backflow unit rather than a standalone valve component.

Confirm local AHJ (Authority Having Jurisdiction) installation requirements, flow rates, and current manufacturer specifications before ordering. View SupplyNet model and configuration details

Documentation: Download Manufacturer Technical Data & Cut Sheet (PDF)