DeZurik G-SERIES Manual - Page 5

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DeZurik G-SERIES Manual

Position Stops

Valves equipped with cylinder operated G-Series actuators have stops to limit valve travel in both the
clockwise and counterclockwise directions. These stops have been adjusted at the factory to coincide
with the Combination Number on the purchase order and do not require adjustment unless the
Combination Number is changed, or if the actuator has been disassembled. See the STOP
ADJUSTMENTS section of this instruction for details on adjusting the stops.
The position stops are factory set and do not require adjustment unless the actuator has been
disassembled or actuator orientation has been changed.

Adjusting Position Stops

Clockwise rotation of the plug is stopped when the piston rod contacts the set screw in the cylinder cap.
Counterclockwise rotation of the plug is stopped when the end of the rack rod contacts the set screw in
the end of the extension cap.
To adjust the stops, follow these steps:
1. Actuate the valve to determine the need for stop adjustment.
Accidental operation of power actuator can cause personal injury or equipment damage.
Disconnect and lock out power to actuator before servicing.
2. If adjustment is required, loosen the lock nut on the stop to be adjusted and turn the stop in or
out as required. Tighten the lock nut.
3. Actuate the valve to check the stop adjustment and repeat Steps 2 and 3 until the desired stop
setting is achieved.

Seat/Plug Clearance Adjustment

See the ADJUSTMENTS section of the Valve Instruction for details on adjusting seat/plug clearance.
July 2016
Cylinder Operated G-Series Actuator
Figure 2 – Position Stops
Page 5
DeZURIK
D10191