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KTM VIRGO SERIES E & U TOP ENTRY TRUNNION BALL VALVE
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
Installation of valve in vertical pipeline or
horizontal stem
• Installation of valve in vertical pipeline:
- This design does not permit the valve
installation in vertical pipeline.
• Installation of valve with horizontal stem:
- This design does not permit the valve
installation with stem in horizontal or
inclined position. Only vertical position is
allowed.
4 OPERATION
• For lever operated valve, the lever is either
shipped loose or assembled with valve
depending upon the size of the valve / lever.
Rotation of lever in the clockwise direction
closes the valve and counterclockwise
rotation opens the valve.
• For gear operated valve, THE GEAR
OPERATOR OPEN / CLOSE ADJUSTMENT
HAS BEEN DONE PRIOR TO SHIPMENT AND
MUST NOT BE CHANGED. Rotation of hand
wheel in the clockwise direction closes the
valve and counterclockwise rotation opens
the valve.
• It is recommended that the valve should
be opened and closed slowly to prevent
hammering effect on the valve and pipeline.
• If the valve is not operating to fully open or
fully close position and/or leaking, do not
apply excessive force to operate the valve.
This can damage the valve internals and/or
the operator parts.
• Do not apply extra force using inappropriate
extensions to levers and handwheel like pipes
or bars.
Note: International standards typically
restrict the input force on lever/handwheel
rim to max. of 360N and the valves are
designed accordingly.
• For valve with pneumatic and gas actuator,
do not exceed the operating pressure of
actuator.
• Always use dry, moisture free air while
operating the valve with pneumatic actuator.
4
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