Chapter 7 Basic Hydraulic Circuits 7.1.2 Pressure-venting circuits The function The function of a pressure venting circuit is to unload the pumping and to keep the pump idling when the hydraulic system is during the regular off- working,which it will realize to save the energy,reduce the heating and get a long life of use. The methods There are two methods of unloaded pump:one is venting by pressure (pump operating under zero or near zero pressure,is called the pressure- venting)and the other is venting by flow rate(pump operating under zero or neat zero flow rates,is called flow-venting). Homepage List Upwards Downwards Retun Exit Chapter 7 Basic Hydraulic Circuits 6 7.1.2 Pressure-venting circuits The function The methods The function of a pressure venting circuit is to unload the pumping and to keep the pump idling when the hydraulic system is during the regular off￾working, which it will realize to save the energy, reduce the heating and get a long life of use. There are two methods of unloaded pump: one is venting by pressure (pump operating under zero or near zero pressure, is called the pressure￾venting) and the other is venting by flow rate (pump operating under zero or neat zero flow rates, is called flow-venting)