The 2-1-2" 375DA Reduced Pressure Principle Detector Backflow Assembly protects against backsiphonage and backpressure of contaminated water in high hazard, fire protection applications. The 375DA features a metered bypass to effectively detect leaks and any unauthorized water use. Materials include an epoxy-coated ductile iron body, and stainless steel internals, fasteners, springs, and sensing line. The Zurn Wilkins Compound Check provides low headloss and superior performance and valves short lay-lenght makes the 375DA ideal for any backflow replacement.