Problems with single-ended valve stems and double-ended valve stems
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Does anyone know if changing the valve stem of a gate valve from single-ended to double-ended will cause a change in torque?
““The valve stem of the gate valve has been changed from single-ended to double-ended.” I’m not sure what “single-ended” and “double-ended” mean in this context; could you please explain it? Thank you! :)
It should be single-thread and double-thread; I only know that switching time is reduced by half after replacing it with a double-thread valve stem
Oh, you might be referring to those called – straight stem valves and concealed stem valves. If understood in this way, it has its advantages and disadvantages, as well as certain requirements regarding special media. For reference.
This post was last edited by RCfz on 2021-10-27 at 11:03. Torque increases; for trapezoidal threads that comply with national standards, a diameter of more than 40 is required in order to use a double-start thread, otherwise self-locking cannot be ensured