ASSE (PLUMBING) 1003-2009 Performance Requirements for Water Pressure Reducing Valves for Domestic Water Distribution Systems
Devices covered by this standard are self-contained, direct acting, single diaphragm types. Devices shall be permitted to have an integral strainer, separate strainer connected to the valve inlet, or be without strainer. Devices shall be permitted to be with or without an integral bypass relief valve. The purpose of this device is to reduce static and flowing pressures in water distribution systems.