When the hydraulic pressure is equal to the left side of the control slide valve spring force. Training variable pump, slide valve is closed, the control cylinder stop motion, ending the process variable, the pump working pressure to re-stabilize the setting value in the vicinity of the spring. Empathy. Maintenance variable displacement pump, when the system pressure is reduced, the output variable flow pump mechanism increases work pressure back up to the setting value. To a remote pressure control system 12 remote pressure control principle shown in Figure 2, which is basically the same principle of the constant voltage control with variable displacement pump, the only difference is that the pressure regulating valve may be installed in any position according to need, so that the pump pressure has played the role of remote regulation. Is the remote pressure control valve, usually direct-acting relief valve, proportional relief valve can also be used. When using proportional relief valve. Variable pump repair phone, variable pump pressure by electrical adjustment. It is the use of variable pump speed rotation of the rotor to transfer momentum to the gas molecules, and thus obtain the orientation speed, so as to be compressed, is driven towards the exhaust port of the preceding stage is drawn away after a vacuum pump. Such a pump can be specifically divided into: 1) molecular pump rotor traction gas molecules collide with the high-speed movement of momentum is obtained, to be driven to the outlet of the pump. 2) turbo molecular pump by high-speed rotation of the rotor blades and the stationary blade with each other to achieve a given pumping. Such pumps are typically operate at the molecular flow state. 3) It is composed of complex molecular pump turbo molecular pump and traction type two series combination of a complex type of molecular pump. Maintenance variable pump telephone, variable pump, hydraulic pressure from Jinan Jing Jing Chong Chong Hydraulic Machinery Limited. Jinan Jing Chong Hydraulic Machinery Co., Ltd. (www.jnjcyy.com) (www.jnjcyy.com) strong, credible, in Jinan, Shandong mining machinery industry has accumulated a large number of loyal customers. The company better work attitude and continuous improvement to create innovative ideas will lead crystal hydraulic and you hand into the brilliant, for a better future!