4
Unidirectional Series
Operation and Maintenance Manual
MAINTENANCE
NOTICE
Any modification or use of unauthorized parts voids any and all warranty considerations.
Lubrication
The manual valve stem should be lubricated at regular intervals for smooth operation of the valve. A lubrication nipple is
provided on the collar. Cylinder operated valves do not require routine lubrication.
NOTICE
If the cylinder actuator is disassembled for repair, the cylinder wall and seals need to be lubricated with a lithium-based
grease prior to reassembly.
Manual Valve Stem Cylinder Actuator
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