Used in fire-fighting and daily combined water supply system in residential areas. When fire-fighting system starts and pressure rises, the supply of daily water will be cut off automatically, thus to ensure the pressure of water supply for fire control. Pressure Grade: PN10, PN16, PN25 Diaphram Type: DN50-DN350 Piston Type: DN400-DN800 Note: We accept design and manufacture of various non-standard valves and arrange production according to users' supplied drawings and samples.
