The concept of "several digits and several passes" of Solenoid Valve
What is the concept of "pass" and "position" of solenoid valve?
"pass" and "position" are very important concepts of solenoid valves. Different "pass" and "position" constitute different types and uses of pneumatic reversing solenoid valves. "position" refers to the number of working positions of the spool of the pneumatic directional valve, that is to say, the valve has several working states. For example, a two-position valve or a three-position valve means that the spool of this pneumatic valve has two or three different working positions.
"pass" refers to the number of interfaces on the valve body of the pneumatic reversing valve that are different and connected with different windpipes in the system. Different gas paths can only be connected and closed by the switch of the valve port when the spool is shifted. For example, a three-way valve or a four-way valve means that when the directional valve is working, the valve body has three or four air ports, that is to say, the valve is a three-way valve or a four-way valve.
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