FAQ

|3/4/5 Port Solenoid Valves

What are the Rc1/8 ports with an “X” and a “Y” engraved on them on the VQ7 series sub-plate used for? Also, do the Rc1/8 ports with a “PA” and a “PB” engraved on them above the manifold base exhaust port need to be piped?

Both the X and Y ports and the PA and PB ports act as the exhaust ports of the pilot valves. They function the same as the PE ports of other valves. Do not block any of these ports with a plug as the valves will no longer operate if plugged. If the ambience around the valves is poor, the installation of a silencer is recommended.
Note) For a single unit single solenoid, exhaust is not performed from the Y port (the side without a pilot valve).