When using a metering pump (displacement immutable) is not connected in series with the pressure control valve cylinder load, so long as the pump speed is constant, in theory, the pump pressure is dependent on the size of the load pressure (of course, the load pressure must not exceed the main security system valve set pressure of the hydraulic motor, but can not exceed the import pump rated pressure) of the hydraulic motor repair phone, so the pump output flow will not change due to changes in pressure. In using the variable displacement pump (variable displacement) is not connected in series with the pressure control valve cylinder hydraulic motor load import agent, as long as you are within the hydraulic control system to take the load-sensing system, or power control system of the hydraulic motor import services, Then, in the load pressure is relatively small, the pump output flow generally large, on this basis, the load increases, the pump output flow will make smaller, that is inversely proportional to the pressure and flow have a tendency, like upstairs said, depends on pressure and flow characteristics. Hydraulic pump to provide pressurized fluid to a hydraulic device for hydraulic transmission, is a pump. Its function is to power machine (such as a motor and an internal combustion engine, etc.) of the mechanical energy into pressure energy of the liquid. Output flow can be adjusted as needed is called variable displacement pump, the flow rate can not be adjusted is called a metering pump. Hydraulic systems commonly used in pump gear pumps, vane pumps and piston pumps three kinds. Imported hydraulic motor repair | hydraulic motors | hydraulic by 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! You can also access (www.jnjcyy.com/supply_details_51402170.html), for more information about the company.