The working principle of the pilot piston solenoid valve is mainly divided into two kinds: normally open (power and power) and normally closed (power and power). To understand the working principle of the solenoid valve, you need to know the internal pressure relief hole and the main piston of the imported gas solenoid valve. The working principle is as follows:

Normally closed: when the coil is energized, the electromagnetic core is attracted, the pressure relief hole is opened, the main piston is pushed by the medium pressure, the main valve port is opened, and the medium circulates. When the coil power, the main valve port is closed, the medium is cut off.

Normally open: when the pneumatic high-frequency solenoid valve coil is energized, the electromagnetic core is attracted, the pressure relief hole is closed, the main piston is driven by the medium pressure, the main valve port is closed, and the medium is cut off. When the coil power, the main valve opening, media circulation.

Note:

1. The pilot piston solenoid valve requires that the medium through the solenoid valve must have pressure (the valve is not suitable for no pressure medium), our side of the solenoid valve to ensure that the medium has 0. 1 kg pressure, can work normally.

2. The force of the main piston of the pilot piston solenoid valve comes from two sources, one is the magnetic force generated after energized, and the other is the pressure of the medium.

These two forces must be present at the same time to ensure proper operation of the pilot piston solenoid valve.

First, the power supply of automobile high frequency solenoid valve.

1, according to the type of power supply, respectively select AC and DC solenoid valve. Generally speaking, AC power is easy to access.

2. AC220V. Voltage specifications as far as possible choose DC24V.

3. The fluctuation of power supply voltage is generally +%10%. - Air conditioning 15%, DC about 10%. If it is outside the tolerance range, pressure stabilizing measures or special order requirements should be taken.

4. The rated current and power consumption should be selected according to the power supply capacity. High VA value should be paid attention to when ac is started, and indirect solenoid valve should be preferred when capacity is insufficient.

Two, the control accuracy of the solenoid valve.

1 ordinary solenoid valve only two positions: on and off. High control accuracy, parameter stability, please choose multiple solenoid valve.

2. Action time: refers to the time from the opening or closing of electrical signal to the completion of the main valve action. Only the multifunctional solenoid valve patented by our company can adjust the opening and closing time independently, which can meet the requirements of control accuracy and prevent water hammer damage.

3. The leak value given on the leak sample is a common economic grade.