●Under normal operating conditions, the valve remains closed.
●The specific pressure is set by adjusting the spring with the pressure nut.
●When the pressure in the pipes is above the specific pressure, the valve becomes open automatically to make the liquid pass over in order to reduce the pressure in the pipes.
●The valve can be with handle in order to realize partial open. When the handle remains open on the operation spot, the detergent can flow though the flow valves.