The 3" 375ASTOSY Reduced Pressure Principle Backflow Assembly with flanged end OS&Y gate valves is utilized in high hazard applications for all applications and market segments, protecting against backsiphonage and backpressure of contaminated water into the potable water supply. The 375AST offers lightweight design with a high quality, 304L grade stainless steel valve body and sensing line, plus stainless steel internals, fasteners, and springs provide corrosion resistance and saves you money on maintenance costs.

• Short lay-length offers reduces installation time and costs in compact spaces
• Patented Compound Check offers reliable performance, improved flow characteristics, and installation in lower-pressure systems
• Stainless steel body protects against corrosion
• ASSE® Listed 1013
• AWWA Compliant C511 (with gates only), and C550
• FM® Approved
• UL® and C-UL® Classified
• CSA® Certified
• IAPMO® Listed
• Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California