Everyone* * , how to operate the handwheel of this pneumatic valve?
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There is no manual pneumatic switching device on the valve. No matter what position the valve is in, the handwheel cannot be shaken.
Is it possible to use the handwheel to keep the valve in its original position when there is a malfunction?
Is it possible to switch between pneumatic and manual by pushing and pulling the valve stem?
The settings reflected in the photos are incomplete. There should be a pointer in the middle of the valve stem barrel for the middle automatic position, the front and rear end point switch positions, and there should also be an automatic/manual knob on the customizer. Guess, for reference.
For this kind of brand-name product, you can just go to their official website and check. They probably have samples, or you can just call customer service and ask.
Look at the picture, when there is a fault, just turn the handwheel to turn it on. Note: Make sure there is no air pressure entering the cylinder from the air inlet.