Solenoid valve is used to control the fluid automation foundation components, belongs to the actuator, not limited to hydraulic, pneumatic. Used in industrial control systems to adjust the direction, flow, speed, and other parameters of the medium.

Liugong loader accessories solenoid valves from the principle of three categories:

1, straight acting solenoid valve

Principle: When electrified, the electromagnetic force generated by the electromagnetic coil will lift the closing part from the seat and the valve will open. When the power is cut off, the electromagnetic force disappears, the spring presses the closing part on the seat, and the valve is closed.

2. Step by step solenoid valve

Principle: it is a kind of direct action and pilot type combination principle, when the inlet and outlet have no pressure difference, after electrization, the electromagnetic force directly pilot small valve and main valve close part in turn up, the valve opens. When the inlet and outlet reach the starting pressure difference, after electrization, electromagnetic force pilot small valve, the pressure of the main valve lower chamber rises, the pressure of the upper chamber drops, so as to use the pressure difference to push the main valve upward; When power is cut off, the pilot valve USES spring force or medium pressure to push the closing part and move downward to close the valve.

3, pilot type solenoid valve

Principle: when electrified, the electromagnetic force opens the pilot hole, and the pressure in the upper chamber drops rapidly, forming a high and low pressure difference around the closing part. The fluid pressure pushes the closing part to move upward, and the valve is opened. When the power is cut off, the spring force will close the pilot hole, inlet pressure through the bypass hole rapidly chamber in the valve close around the lower low high pressure difference, fluid pressure to push the closure of the parts down, close the valve.

Use model：ZF.0501313375/0260120025