Actuator Assembly Codes - Emerson Bettis Q Series Installation, Operation And Maintenance Manual

Installation, Operation and Maintenance Manual
DOC.IOM.BQ.E Rev. 3
4.4

Actuator Assembly Codes

Figure 12
Assembly Code: CW
= Standard, Clockwise-to-Close rotation
= Fail-to-Close
Sizes Q40 and Q65
Sizes Q100 to Q1600
Rotation A = Central air chamber pressurized
Rotation B = End cap air chambers pressurized
1.
2.
3.
4.
5.
6.
All views are from above. Pistons are shown in inward position.
Installation
Assembly Code - Double-Acting
B
A
4
A B
B
A
2
4
1
A B
Limit stops location
Position of cam
Position of slot and dot in pinion
Default pistons position
Pinion 90° Rotated
Reversed piston position
Assembly Code: CC
= Reverse, Counterclockwise-to-Open
= Fail-to-Open
A
1 3
B
2
A
B
3
Section 4: Installation
3
A B
3
A B
April 2019
5
6
5
6
19