Vacuum Control Valve Truck Master

The vacuum control valve is installed when the suction line may force the pump to operate below the cavitation limit. Air must then be supplied to the suction side of the pump through the vacuum contol valve which is regulated according to the required pressure.

Cavitation arises when the pressure in the pump falls to under the steam pressure of the water, which makes the water boiling and steam bubbles arise in the water. Continuous operation will cause serious mechanical damage.