What does the R/S/P/A/B on the 5/2 solenoid valve mean?

What is a 5/2 solenoid valve?

We always see a 5/2 or 3/2 solenoid valve, so what is a 5/2 solenoid valve?

5/2 solenoid valve means it has 2 positions 5 ways. 2 positions mean that there are two working positions of the solenoid valve spool. 5 ways mean that the solenoid valve has five interfaces (Denoted by the letters R/S/P/A/B).
R is the exhaust hole, S is the exhaust hole, P is the intake hole, A is the working port, and B is the working port.
As shown in figure 1.
(Figure 1)
A and B which connect cylinders are the reversing working ports. And P connects to the air source unit, and R /S connects to silencers.
Can we convert the 5/2 solenoid valve into the 3/2 solenoid valve?
Yes, sure. We can plug holes A and R with the following plugs. As shown in figure 2.
      (Figure 2).
Also, if we need a 5/2 solenoid valve again, we can remove these plugs.
so we need to use PTFE PATE instead of liquid PTFE PATE. As shown in figure 3.
      (Figure 3)


Hi, I’m Zoe, I like sharing knowledge of related pneumatic and automatic products, also, some useful skills. Hope we can learn from each other.
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