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After connecting the pumps in the fan hydraulic oil station, the pressure in the main pipe is lower than when using a single pump

2016-12-26View Original

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Seeking help: When the fan’s hydraulic oil pump operates alone, the outlet pressure is 3.0 MPa; however, the pressure after the pump drops to 2.8 MPa. The pump is a dual-gear pump, and there is a check valve at the pump’s outlet. A pressure control valve is also present on the outlet pipeline, and both pumps achieve a pressure of 3.0 MPa when operating individually. I don’t know why

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