How to calculate the stroke of a pneumatic globe valve? What is the unit?
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This post was last edited by Desert Fish on 2015-7-2 11:17. Pneumatic ammonia stop valve J41F-25P DN65 304, Pneumatic ammonia stop valve J41F-25P DN150 304, Pneumatic ammonia stop valve J41F-25P DN100 304, Pneumatic stop valve J41F-16C DN125 WCB. How to calculate the stroke of a pneumatic stop valve? How much is it? What is the unit?
For this, turn it from fully closed to fully open, count how many turns the handwheel makes, and then count the turns again when turning it back on. At a glance, it’s impossible to tell what the opening degree is……
The national design standards for stop valves specify that the opening height of the valve should be between 1/4 and 1/2 of the diameter. For more details, you can ask the manufacturer. If you need to calculate it, count how many turns the handle makes from fully closed to fully open; that number, multiplied by the pitch of the valve stem, gives the stroke length