• China Accessories

 #852  por fish72a
 Mié Mar 25, 2020 1:00 am
The globe valve is a forced sealing valve, so when the valve is closed, pressure must be applied to the disc to force the sealing surface not to leak. When the medium enters the valve from below the disc, the resistance that the operating force needs to overcome is the friction force between the stem and the packing and the thrust generated by the pressure of the medium. The force of closing the valve is greater than that of the open valve, so the diameter of the valve stem is larger, otherwise the top bending of the valve stem will occur.
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