This 2 1/2 inch lead free reduced pressure zone assembly is designed to prevent the flow of polluted 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 ideal for protection in continuous pressure piping applications and at cross-connections identified as health hazards and for contaminants at the service line entrance. Its compact modular design facilitates easy maintenance with a single access cover for in-line repairs. This assembly consists of an epoxy coated cast iron body construction, non-rising stem resilient seated gate valves, top mounted test cocks, two in-line independent check valves, captured springs and replaceable check seats with an internal relief valve for reduced space requirements.