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dixonvalve.com • 800.789.
1718
Dixon B
5107
Series Butterfly Valves
| IOM
Troubleshooting
Problem
Possible Cause
Solution
VALVE IS NOT OPENING
SMOOTHLY
Valve seal is sticking to the disc and jamming.
Lubricate with food grade
grease.
Excessive pressure on line.
Check line for proper support
and correct as necessary.
Actuator is not operating properly.
Confirm the supply pressure to
the actuator is adequate
Replace in necessary
VALVE WILL NOT OPEN OR
CLOSE
Valve seat has deformed.
Replace the valve seat.
Actuator is not being used properly.
Check air connections.
Actuator is clogged with debris.
Check the actuator & clean.
Actuator component is worn out.
Replace worn components.
WATER HAMMER
The valve is closing too fast.
Install a flow regulator to adjust
the closing speed of the
actuator
VALVE IS LEAKING AROUND
THE SHAFT
The seal has worn or degraded.
Replace the seat.
Change the seats to another
material that is more compatible
with the process fluid.
VALVE IS LEAKING
INTERNALLY PASSED THE
DISC IN THE CLOSED
POSITION
Seats worn by product.
Change the valve seat.
Excessive external stress on the valve body.
Support line properly
Process fluid temperature exceeds valve
rating.
Lower the fluid temperature.
High cycling in short amount of time.
Decrease cycle times.
Valve body bolts are loose.
Tighten all fasteners.