DeZurik G-SERIES Manual - Página 4

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DeZurik G-SERIES Manual
DeZURIK
Cylinder Operated G-Series Actuator

Description

The G-Series Cylinder Actuator is a totally enclosed, quarter turn, pneumatic operated actuator. A 2"
(50mm) square nut on top of the actuator is provided for manual operation.
Note:
Tapered Plug valves equipped with cylinder actuators do not provide dead-tight shutoff.

Air Supply

The supply pressure to the cylinder should be between 50 and 100 psi (344 and 689 kPa).

Lubrication

The G-Series Cylinder Actuator has been lubricated at the factory and requires no routine lubrication. If the
actuator is disassembled, lubricate the rack, rack guide, gear sector and bearings using one of these lubricants:
- Keystone Zeniplex-1 (recommended)
- Amoco Amolith Grease #1-EP (alternate)
- Amsoil GHD (alternate)
- Mobil Mobilux EP 1 (alternate)
- Petro-Canada Vultrex MPG EP 1 (alternate)
- Shell Alvania EP 1 (alternate)
- Texaco Multifak EP 1 (alternate)
If the cylinder is disassembled, it must be lubricated as described in the cylinder instructions.

Actuator Identification

The G-Series Cylinder Actuator is available in two sizes: G6 and G12. See Figure 1 for actuator
identification.
To determine the actuator size, measure the diameter of the cover - see Figure 1 and Table A. To
determine the cylinder size, measure the diameter of the cylinder - see Figure 1 and Table B.
Table A: Actuator Identification
Actuator
G6
G12
D10191
Figure 1 - Actuator Identification
∅ "A"
IN
MM
8
205
15
390
Page 4
Table B: Cylinder Identification
∅ "B"
Cylinder
IN
C4
4.5
C6
6.5
C8
8.5
C10
10.5
MM
115
165
215
265
July 2016