WIKA IV10 Operating Instructions Manual page 15

5. Commissioning, operation
5.2 Commissioning and operation
To close the valve, turn the handle in a clockwise direction as far as the
stop. To open the valve, turn the handle anticlockwise as far as the stop.
It will take approximately 4 turns from open to closed and vice versa.
The flow can be controlled by not totally opening/closing the valve.
Please note that the handle may present a slight play and
spin freely up to a quarter turn when in the depressurised
state. This is due to the constructive design.
The valve, especially the handle, must not be subjected to any exter-
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nal loading (e.g. use as a climbing aid, support for objects).
The handle may only be used by hand; the use of tools is not
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accepted.
The torque on reaching the valve stop must only be hand-tight.
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Ensure that all valves of the product are closed prior to opening the
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main valve of the process line.
WIKA operating instructions, shut-off valves and valve manifolds
EN
15