The 375A Reduced Pressure Principle Backflow Assembly is utilized where a potential high health hazard exists and is ideal for use when lead-free valves are required protecting against both backsiphonage and backpressure of contaminated water into the potable water supply. The 375A includes a lightweight, grooved, epoxy-coated ductile iron valve body eliminating exposure to corrosion. With multiple options for NRS, OS&Y, and Butterfly shut-off valves, the 375A utilizes the Zurn Wilkins low headloss Compound Check and offers the lowest lifecycle costs on the market.