22mm inlet manual brass pressure regulator prv valve

Pressure reducing valves are mainly composed of valve body, piston, spring, adjusting screw and other parts. When the pressure of liquid or gas in the system exceeds the set value, the valve body will open so that the liquid or gas flows through the piston and passes through a reduced channel to reduce the pressure. When the pressure drops below the set value, the valve body closes so that the liquid or gas does not continue to flow through the valve. At the same time, the pressure reducing valve is equipped with an adjusting screw that can be turned to adjust the pressure value at which the valve opens or closes.