We set relief valve in this type of pump to control the pressure and guarantee the working safety of the pump. It has the functions of automatic pressure relief, low-pressure indication and low-oil indication. The actual running and stopping time is controlled by the controller so as to supply oil automatically and control the situation of low pressure and low oil. The starting switch set in the pump is for the purpose of test.

The device, which is composed of this pump together with MO component units of measure, PV selection connectors and other related components, is applied to various machinery with long pipe trip and many lubricating points.