The amount of valve anti-tank. When a circuit, the load should a LS feedback signal (ie load) (variable pump) care, these two quantities are added together (LS and the spring force and), if more than the high-pressure oil pump pressure way flow valve will push up, so that by reducing the flow-way flow valve. Flow to the load increases. Excess flow through the three-way flow valve back into the tank. Keep both ends of the orifice flow through the three-way valve pressure constant. Throttle pressure depends only on the size of the spring force of the variable displacement pump, is not affected by the load. Under the same pressure, the greater the area of ??the orifice, the greater the flow. Variable oil pump expensive and sensitive, in the first manipulation and routine maintenance should note the following: the pump oiling: Before moving 啔 pump, fuel injection pump from the fuel inlet to the inside (variable pump) specializing until filled up. If you start the pump before oiling, may be due to insufficient lubrication failure. Pump can not be reversed: Note electrical wiring, reversing might damage the pump. (Variable pump) maintenance, 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!