DeZurik G-SERIES Manuel - Page 4

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DeZurik G-SERIES Manuel
DeZURIK
Manual G-Series Actuators on PEC Eccentric Valves

Description

The manual operated G-Series actuator is designed to operate a PEC Eccentric valve. Integral stops
limit actuator stroke for both the open and closed valve positions. This actuator is available in three
sizes: Size 6, Size 12 and Size 16. See Figure 1 to identify which unit you have.
This actuator can be furnished with either cast iron or ductile iron gears.
The ductile iron gear is necessary for submerged or buried service valves or when a 2"
operating nut is installed on the input shaft. Breakage of the gear teeth will occur if cast
iron gears are torqued above 200 ft-lb's.
Cast Iron & Ductile Iron are similar in appearance: To determine if the gear material is ductile
iron, remove the cover as described in the ACTUATOR DISASSEMBLY Section. Size 6 gears
have "M199" cast in raised letters on the round surface opposite the teeth. Size 12 & Size 16
gears have "M199" cast in raised letters on either the top or under side of the web between the
hub and the teeth, removal of the gear is necessary to see the marking. If there is no "M199"
on the gear, the material is cast iron.
D10063
Figure 1— G-Series Actuator Identification
Page 4
August 2012