Pneumatic globe valve stem structure
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How is the valve stem end of a pneumatic globe valve connected to the pneumatic actuator? What are the mainstream methods?
The closing element of a pneumatic globe valve is a plug-shaped disc, whose sealing surface is either flat or conical; the disc moves in a straight line along the centerline of the fluid. The movement pattern of the valve stem can be of the lift-type (where the valve stem moves up and down while the handwheel does not move), or it can be of the lift-rotate type (where both the handwheel and the valve stem rotate and move up and down, with the nut located on the valve body). Stop valves are only suitable for full open and full closed positions; they cannot be used for regulation or throttling. Pneumatic globe valves are generally of the full-open/full-closed type.
The closing element of a pneumatic globe valve is a plug-shaped disc, whose sealing surface is either flat or conical; the disc moves in a straight line along the centerline of the fluid. The movement pattern of the valve stem can be of the lift-type (where the valve stem moves up and down while the handwheel does not move), or it can be of the lift-rotate type (where both the handwheel and the valve stem rotate and move up and down, with the nut located on the valve body). Stop valves are only suitable for full open and full closed positions; they cannot be used for regulation or throttling. Pneumatic globe valves are generally of the full-open/full-closed type.
It is generally a structure that involves screwing a nut onto a coupling sleeve and tightening it. What he said on the second floor is incorrect; don’t listen to him
Do you have screenshots of the schematic diagram or pictures of the actual product? That would make it easier to understand
Now the structure is very clear and easy to understand. Thank you, friend, for your help:handshake
For this structure, it is best to have the threads left-handed on one side and right-handed on the other