Network optimization information:

Wires 1-2,1-3 are connected by the coil with one in and two out. Control solenoid valve power, 1 and 2 closed, 1 to 3. Binary: When the coil is powered on, the two leads 1,3, and 1 are closed. When the power is cut off, 2 and 1 join together and 3 leads to 1. Note: check valves should be used when two inlet and one outlet valves are operating at unequal pressures.

The structure principle of pulsating solenoid valve is as follows:

Note: throttling solenoid valve above is the general principle of solenoid valve. In fact, solenoid valves work differently according to the temperature and pressure of the medium passing through them, for example, pressure in the pipeline, gravity flow state without pressure. For example, in gravity flow, zero pressure start is required, in which the coil pulls up the entire brake body after the current is energized. When the coil is under pressure, the solenoid valve draws out a pin, which is inserted into the brake body, using the pressure of the fluid itself to lift the brake body. The difference between the two is that the solenoid valve in the gravity flow state needs to pull up the whole brake body, so in the pressure state of the larger volume, just pull up the pin, so that the volume can be made smaller.