DeZurik G-SERIES Manual - Página 10

Navegue en línea o descargue pdf Manual para Controlador DeZurik G-SERIES. DeZurik G-SERIES 14 páginas. Lift, turn and reseat used on ptw & pfw tapered plug valves
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DeZURIK

G-Series Manual Actuator used on BOS Butterfly Valves

Actuator Disassembly and Assembly

Under normal operating conditions the G-Series actuator does not require routine maintenance. If the

actuator has excessive wear or has been damaged, it is recommended that the actuator be replaced,

not repaired.

Use the following procedure for replacing leaking seals and o-rings. Refer to Figure 2 for component

identification.

Actuator Disassembly:

Flow in the pipeline with the actuator removed can slam the valve closed causing personal

injury and damaging the flow system. Shut down the flow in the pipeline before removing the

actuator from the valve.

1. Discontinue flow and relieve pipeline pressure.

2. Close the valve.

3. Remove the actuator from the valve as described in the REMOVING ACTUATOR FROM

VALVE Section of this Instruction.

4. Remove screws (B13) and cover (B12).

5. Remove the screws (B1M) and cover (B1B).

6. Remove the o-ring (B1N) thru the top of the cover (B1B).

7. Note the position of the gear (B1C) in the housing (B1A), then slide the gear (B1C) out of the

housing.

8. Remove the two pipe plugs (B1I) from the housing (B1A).

9. Rotate the drive shaft (B1F) until the pins (B1K) line up with the pipe plug holes in the housing

(B1A).

10. Drive both pins (B1K) thru the worm (B1D) and drive shaft (B1F).

11. Slide the drive shaft (B1F) out of the housing (B1A).

12. Remove the seal (B1J) from the housing (B1A).

13. Remove the o-ring (B1N) thru the bottom of the housing (B1A).

14. Remove old gasket sealant from the top of the housing (B1A) and bottom of the cover (B1B).

D10465

Page 10

August 2012