DeZurik G-SERIES Manuel - Page 7

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Stop Adjustments

To Adjust the Open Position Stop

See Figure 5 for stop identification.

Adjusting stops with flow in the pipeline can allow the valve to close causing

personal injury and damaging the flow system.

Shut down the flow and relieve pipeline pressure before making stop

adjustments.

1. Discontinue flow and relieve pipeline pressure.

2. To visually determine when the valve is in the open position:

Above Ground Service (GS_A) actuator - Remove the screws (B1R) and pointer (B1Q).

Buried Service (GB_A) actuator - Remove the screws (B13) and cover (B12).

3. Loosen the nut on the open position screw, and back out the screw about two turns.

4. Turn the handwheel, chainwheel or 2" wrenching square operator so the drive key/plug

alignment is parallel to the valve flanges. See Figure 4 for valve open position.

5. Turn the open position screw clockwise until resistance is felt from the screw contacting the

gear (B1C).

6. Prevent the screw from turning, and tighten the nut against housing (B1A).

7. Above Ground Service (GS_A) actuator - Replace the pointer (B1Q) so it is pointing at the

OPEN mark on the cover (B1B) and tighten screws (B1R).

Buried Service (GB_A) actuator - Remove old sealant from cover (B12) and cover (B1B)

mating mounting surfaces. Apply a bead of silicone sealant DOW RTV-732 (1055515) or similar

to the cover (B12) and cover (B1B) mating surfaces. Fasten the cover (B12) to cover (B1B) with

screws (B13).

Pipeline flow may now be restored.

August 2012

(Continued)

Figure 4— Valve Open Position

Page 7

DeZURIK

D10456