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Butterfly valve actuators require regular
maintenance to ensure their proper functioning and longevity. Here are the key
maintenance tasks:
Visual Inspection: Regularly check the
actuator for any signs of damage, such as cracks, dents, or corrosion on the
housing. Inspect the connection points for loose bolts or fittings, as these
can lead to leaks or reduced performance. Also, look for any signs of oil or
air leakage, which may indicate a problem with the seals.
Lubrication: The moving parts of the
actuator, such as the valve stem and gears, should be lubricated regularly. Use
a suitable lubricant recommended by the manufacturer to reduce friction and
ensure smooth operation. This helps prevent wear and tear and extends the life
of the actuator.
Seal Replacement: Over time, the seals in
the actuator may wear out and cause leaks. Check the seals periodically and
replace them if there is any sign of damage or degradation. This is especially
important for pneumatic actuators to maintain proper air pressure and prevent energy
loss.
Calibration and Testing: Regularly
calibrate the actuator to ensure accurate positioning of the butterfly valve.
This involves checking and adjusting the positioner to match the desired valve
opening and closing positions. Additionally, perform functional tests to verify
that the actuator responds correctly to control signals.
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