Features: Pressure reducing valves is to prevent water backflow, release the pressure of the water heater tanks. Make of brass which is stable and ensures maximums durability. Compact size, wear resistance and convenient installation and maintenance. The safety valves is used to release the pressure when fixed valves is run over. Easy to install: installed in the cold water inlet of the water heater. Specifications: Component: Plastic, Brass Type: 0.7mpa/0.75mpa/0.8mpa/0.9mpa/1.0mpa Size: As Shown in the Picture Package Includes: 1pc Pressure Relief valves note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Pressure reducing valves is to prevent water backflow, release the pressure of the water heater tanks. Make of brass which is stable and ensures maximums durability. Compact size, wear resistance and convenient installation and maintenance. The safety valves is used to release the pressure when fixed valves is run over. Easy to install: installed in the cold water inlet of the water heater.