April 2022
Installation, Operation and Maintenance Manual
E-90090007 Rev. 0
4
Section 2: Introduction
Introduction
The catalog lists standard models intended to cover a wide range of sizes and applications.
Customers can use Figure 2 to identify the key operator characteristics. If not included
in the catalog lists, custom designed models are also available for specialized thrust or
stroke requirements or those beyond the scope of this listing (including linear hydraulic
operated operators).
Figure 2
Linear Valve Operator Model Designation
To illustrate, a model number of 16x10x2.50-GVO-LP-SR-MH is an operator with a 16 in.
inside diameter cylinder, a 10 in. maximum stroke (adjustable down to 8 in. stroke),
a 2.50 in. outside diameter drive rod, and is low-pressure pneumatic spring-return with a
manual hydraulic override.
Operators will also be identified with an individual serial number. Figure 3 shows the form
of the Bettis serial number.
Figure 3
Linear Valve Operator Serial Number
For example, a serial number of 00-123456-2.1 represents the first unit on the second line
of sales order 123456.
## X ## X ### - GVO - HP - YY - ZZ
Cylinder ID*
4" thru 24"
Stroke Length*
Maximum designed stroke listed
(adjustment can reduce stroke by up to 2")
Drive Rod OD*
Actuator Series
GVO - Bettis Gate Valve Operator
*Consult the factory for additional sizes or options
Actuator Type*
HP - High Pressure Hydraulic
Actuator Function
SR - Spring-Return
FS - Fail-Safe
Options and Overrides*
MJ - Manual Jackscrew
(only extends drive rod)
## - ###### - # . #
Bettis
TM
Internal Code
Bettis Sales Order #
(not purchase order #)
Sales Order Line #
Unit #
