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Start a special lecture on the structure and working principle of pumps and proportional valves and common faults. This lecture is divided into two chapters.The first chapter is about the check valve of the pump, the proportional valve of the pump, the gradient system of the pump ...

A proportional valve is a hydraulic valve whose output is proportional to the input signal. It can continuously proportionally control the pressure, flow and direction of the liquid flow according to the given input signal. Proportional valves are widely used for control accuracy and dynamic characteristics that do not require much ...

Introduced to you how to adjust the injection pressure and speed of the injection molding machine. Adjusting the injection pressure and speed of the injection molding machine is done through a proportional valve. So what is a proportional valve? The proportional valve is a hydraulic component, which is composed of the valve body and.

The proportional directional valve is based on the electromagnetic force generated by the electromagnetic coil outside the spool to control the movement of the spool, and the displacement of the spool in the directional valve is controlled by the control coil current, so the direction of oil flow can be controlled at the same time. And traffic.