Emerson BETTIS 23 SH - Section 10: Operator Information

Installation, Operation and Maintenance Manual
DOC.IOM.RG.US Rev. 11 November 2021
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Section 10: Operator Information
Operator Information
Section 10: Operator Information
Refer to Figure 5 and Table 3.
Table 2. Bettis Series and Model
Bettis Series Bettis Model
Series 3
23 SH
33 DH
43 DH
53 DH
Series 6
46 DH
56 DH
66 DH
Series 7
67 DH
77 DH
87 DH
97 DH
107 DH
107DH-8B
The operator has a hydraulic cylinder at each end of the drive case. A scotch yoke mechanism is used
to convert the linear piston motion to quarter-turn rotation.
Figure 5 Typical gas/hydraulic assembly drawing (quarter-turn operators)