What is the working principle of NSY solenoid valve?

NSY solenoid valve is a device that uses electromagnetic force to control the flow of fluids (such as air, oil, water, etc.). It is usually used in automatic control systems and relies on electrical signals to control the opening and closing of valves. According to the information you provided, there are several different types of solenoid valves.

1. Single coil solenoid valve: It has a solenoid coil. When powered on, it generates a magnetic field to push the valve core to move and change the switch state of the valve. After power failure, the valve core is usually reset under the action of spring force.

2. Double coil solenoid valve: There are two solenoid coils, one controls the opening of the valve and the other controls the closing of the valve. It is usually used in applications where precise control of valve switching is required. The state of the solenoid valve is switched by powering on or off at the same time.

3. Center closed: This means that when the solenoid valve is in the unpowered state, the center position of the valve is closed. That is, when the solenoid valve has no current, it will prevent the flow of fluid.

4. Middle position pressed: This type of solenoid valve remains pressed in the middle position and may require manual operation to reset.

5. Center exhaust: The center state of the solenoid valve discharges the fluid or leads to the exhaust pipe. Usually suitable for scenarios where gas or liquid discharge is required.