RESILIENT-SEATED CARTRIDGE STYLE
FNW7XX
BUTTERFLY VALVE
INSTALLATION INSTRUCTIONS
FNW.COM
We reserve the right to modify or improve the designs or
specifications of our products at any time without notice.
10
9. OPERATION
Lever Operated
•
Valves are typically supplied with a locking lever plate. Squeeze the handle and locking lever together to disengage the locking lever
plate. Open and close the valve by turning the handle one-quarter turn (90˚).
•
The valve is in the open position when the handle is parallel to the pipe. The valve is in the closed position when the handle is
perpendicular to the pipe.
Gear Operated
•
The valve is operated by turning the hand wheel in the desired direction. Typically, counter clockwise is towards open, and clockwise is
towards closed.
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Position is indicated by the pointer on the top of the gear operator.
Actuator
•
Please refer to each Actuator’s manual on operation.
10. MAINTENANCE
Typical maintenance consists of periodic inspection and exercising cycling of the valve to assure proper function. Valve parts are subject
to normal wear and should be inspected and replaced as necessary. Inspection and maintenance frequency depends on the severity of
the service conditions. The following periodic preventative maintenance practices are recommended:
•
Operate the valve from full open to full close to assure operability.
•
Check flange bolting for evidence of loosening and correct as needed.
•
Inspect the valve surrounding area for previous or existing leakage at flange faces or stem.
•
Check piping and/or wiring to actuator and related equipment for looseness and correct as needed.
WARNING:
To avoid personal injury to yourself, fellow workers or damage to property, prior to any maintenance, verify the
following conditions:
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Be sure the line is depressurized and drained.
•
Be sure of the pipe line media. Proper care should be taken for protection against toxic and/or flammable fluids.
•
Never remove the valve without an operator (manual or automatic) already attached to the valve shaft.
•
Never remove the operator from the valve while the valve is in the pipeline under pressure.
•
Always be sure disc is in the near closed position before removing the valve.