The opening and closing parts of the pneumatic globe valve is a plug-shaped valve flap, the sealing surface is flat or conical, the valve flap along the center line of the fluid for linear movement. Stem movement form, there are lifting stem (stem lift, handwheel does not lift), there are also lifting rotating stem (handwheel and stem with rotating lift, nut on the valve body). Globe valve is only suitable for full open and full closed, not allowed for regulation and throttling.