• Bronze body with top entry access
• Union end connection
• Quarter turn shutoff valves
• Replaceable seats and discs
• The handles on the shutoff valves can be removed to discourage tampering
• Top mounted test cocks
• Stainless steel spring
• Maximum working pressure is 175 psi (12.1 bar)
• Hydrostatic test pressure is 350 psi (24.1 bar)

This 1 1/2 inch reduced pressure zone backflow preventer assembly is designed to prevent the reverse flow of high hazard (toxic) fluids found in the water from entering into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements. It is used in water services to industrial plants, hospitals, morgues, mortuaries, and chemical plants and it is also used in irrigation systems, boiler feed, water lines and other installations requiring maximum protection. This assembly consists of a bronze body, threaded quarter turn ball valves with union connections, top mounted test cocks, spring loaded check valves, and a pressure differential relief valve.