Three - way machine in the work of the solenoid valve functi

Three - way machine in the work of the solenoid valve function  

Three way solenoid valve is divided into normally closed type and normally open type two, normally closed refers to the coil is not energized when the gas road is broken, normally open refers to the coil is not energized when the gas road is through.  Normally closed two three-way solenoid valve action principle: to the coil is energized, the gas circuit is connected, once the coil power, the gas circuit will be disconnected, which is equivalent to the "point".  Normally open two three-way single electrically controlled solenoid valve action principle: to the coil, the gas circuit is disconnected, once the coil power, the gas circuit will be connected, this is also the "point".  Two five-way double electrically controlled solenoid valve action principle: to the positive action coil is energized, then the positive action gas path is connected (the positive action air outlet hole has gas), even if the positive action coil power is still connected to the positive action gas path, will always be maintained to resist the coil energized stop.  If the resistance coil is energized, the resistance gas circuit is connected (the resistance gas hole is energized). Even after the resistance coil is energized, the resistance gas circuit is still connected and will remain energized until the positive action coil is energized and stopped.  This amounts to "self-locking".  Two three - way solenoid valves are usually one - in - two - out series.  There is also a saying that often open often closed.  Solenoid valve three ports are A\B\C three ports, usually A to B or A to C port, there are B to C port.  Normally closed type is the solenoid valve power off in the future, the valve is closed, normally closed.  In other words, it cannot exit port A.  

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