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Vacuum cutoff solenoid
I haven't been able to figure out the answer to this one. On the side of the body of the SMC double solenoid valves are two small ports labled PE and PX (I think). Does anyone know what these are for? The reason I am asking is that we are considering mounting this solenoid in the vacuum line to "lock in" vacuum. The problem is that the solenoid valves are pilot actuated, requiring a minimum of around 20 psi to actuate. So in order to actuate the valve we need to apply a pilot pressure. So are the PE or PX ports for an external pilot pressure? The people want to know!
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