April 2022
Installation, Operation and Maintenance Manual
E-90090007 Rev. 0
3
Section 2: Introduction
Introduction
2.3
Scope
This manual is a resource for technicians involved in the installation, operation, and
maintenance of Bettis™ GVO Series Hydraulic Spring-Return Valve Operators (type SR
or FS). It serves as a guide and must be thoroughly understood prior to any work on the
operators. For any questions, please contact the manufacturer.
2.4
Model Identification
The Bettis GVO Hydraulic Series represents a broad range of field-proven linear
valve operators suitable for automating most types of rising stem valves in safety
shutdown and control applications. Figure 1 shows the typical assembly drawing of
Bettis GVO-HP-SR operator.
Figure 1
Typical Assembly of GVO-HP-SR
Table 2.
Parts List
Item
Description
Qty
1
Drive Rod
1
8
End Cap
1
11
Piston
1
17
Cylinder
1
80
Connector Assembly
1
140
Pedestal Assembly
1
181
Compression Spring
1