When using the butterfly valve, if meet the operation problem, the sheet on the below can be a reference. If you have more question, please contact us, our team will help with.
Possible Failures
Causes of Failures
Troubleshooting Methods
Leakage at the Packing Area
Expired or Aged Packing
Bolts on the bonnet not tightened
Replace the packingl
Evenly tighten the bonnet bolts
Leakage at the Packing Area
Bolts not tightened
Damaged O-ring
Tighten the bolts.
Replace the O-ring
Leakage at the Packing Area
Valve installation direction is inconsistent with the medium flow direction
Failure to close completely
Accumulation of dirt on the sealing surface
Damage to the sealing surface
Pay attention to installation inspection.
Re-adjust the screws on the actuator and ensure proper closure.
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