What is a hand slide valve?

What is a hand slide valve?

This valve is a two-position three-way manual slide valve. It is often connected in the pipeline and used as an air source switch. When the air source is closed, the pneumatic system The air pressure in the tank is emptied. Personally, I think it is a pipe body structure of a two-position three-way manual valve. There is a sleeve on the outside. By sliding the sleeve, the gas can be connected and disconnected.