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ECO-0438955
REV:A
Installation and Operation Manual
Needle Valves & Ball Valves
H Series Outside Screw & Yoke Head:
CAUTION:
Adjustment of the gland must be carried out at zero pressure
1. Fully close the valve by turning the handle (1) in a clockwise direction to stop lightly on seat
(max. 2 Nm).
2. Open the valve one full turn by rotating the handle in a counter clockwise direction.
3. The two bridge-nuts (3) on either side of the spindle must be tightened evenly, keeping the
bridge parallel to the body, to a torque of 5Nm.
Hi-Pro Ball Valve:
Parker Hi-Pro Ball Valves are not user-serviceable.