the most used in the factory are two-way solenoid valves, two-position three-way solenoid valves, three-position four-way solenoid valves.
Two-way solenoid valve usually consists of a coil, a PLC or other system of a lead point to control when the power is turned on or off, when the power is cut off when not working, this solenoid valve can only carry out one movement, sliding two-position two-way solenoid valve and the other movement requires mechanical standards of cooperation, so it is common in the safety valve.
Two-position three-way solenoid valve also includes a coil, PLC or other system of a lead point to control the coil, that is, when the power is switched on and off, when the power is cut off is the reverse operation; this solenoid valve is suitable for simple action, repeated movement of mechanical devices, such as single coil control of the cylinder.
Three-position four-way solenoid valve consists of 2 coils, PLC or other systems of the two main lead points to control the two coils, one coil on or off when powered, the other coil on the opposite direction of work, if not, to maintain the original state, the two coils can not be energized at the same time; normally closed two-position two-way solenoid valve solenoid valve is suitable for mechanical systems with large travel, and requires the use of phase sensor.
In the factory, the most commonly used are these, plus the four-way valve five-way valve and other special solenoid valve, their role is different, but as long as they master the principle, they can use them to the right.
In a word; the center of the valve will have several places of the valve; custom gas source filtering pressure reducing valve body has several valves, which is well understood, each of my efforts, I hope you can give me some support! If you like it, welcome to click a like, share it, your support is my motivation!