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Causes and troubleshooting of leakage of imported pneumatic butterfly valve stem
When the pneumatic butterfly valve is in use, the valve stem leaks frequently. This requires finding the cause of the valve stem leakage according to the specific situation, so as to eliminate the fault and ensure that the ball valve can be used normally. If the pipe pressure is too high and the ball valve stem leaks beyond the pressure range of the ball valve, it is necessary to replace the ball valve and select the ball valve that meets the pipeline pressure to ensure the normal operation of the pipeline and related equipment.
Other causes and solutions for leakage of pneumatic butterfly valve stem
1. The packing gland is skewed or not pressed
2, insufficient filler
3, filler failure
Exclusion of the above-mentioned pneumatic butterfly valve stem leakage
1. Re-lock the packing gland evenly
2, increase the filler
3, replace the new filler
Special note: The butterfly valve is equipped with an electric actuator or a pneumatic actuator, so that the length of the butterfly valve stem is required to meet the length of the actuator. The butterfly valve stem is too short to easily disengage the valve stem from the actuator connection, causing the butterfly valve to not operate. If the valve stem is too long, it will easily cause the valve stem to bear against the actuator, causing the torque to increase, and the butterfly valve switch is not flexible; it will also cause the valve stem to push down the valve core, causing the butterfly valve core to shift, so that the butterfly valve is not closed. Form a leak. Therefore, the butterfly valve should pay attention to the above matters during installation to avoid unnecessary losses.
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