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  • Cast Iron Globe Valve

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    Cast Iron 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 to not leak. When the medium enters the valve from below the disc, the resistance that the operating force needs to overcome is the friction force of the valve stem and packing and the thrust generated by the pressure of the medium. The force to close the valve is greater than the force to open the valve, so Cast Iron The diameter of the valve stem of the globe valve should be large, otherwise the valve stem will bend up failure.
  • Throttle Butterfly Valves

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  • 2 Flanged Ball Valve

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    Leakage of valve packing.Cause Analysis:The packing gland is not tightly pressed.The filler becomes invalid due to long-term use or improper storage.

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