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GB50-IOM Rev. 0 8/20
THIS INFORMATION IS SUBJECT TO THE CONTROLS OF THE EXPORT ADMINISTRATION REGULATIONS (EAR). THIS INFORMATION SHALL NOT BE PROVIDED TO
NON-US PERSONS OR TRANSFERRED BY ANY MEANS TO ANY LOCATION OUTSIDE THE UNITED STATES CONTRARY TO THE REQUIREMENTS OF THE EAR.
CATALOG PART NUMBER KEY / CONTROL ENGINEERING (CONFIGURATION) DATA
The following catalog configuration data describes standard configuration options of the GB50 series piston actuators
GB50 = 3.0” Piston Diameter
Characters 1-4
GB51 = 4.0” Piston Diameter
(Model No.)
GB52 = 6.0” Piston Diameter
GB53 = 8.0” Piston Diameter
A
=
Yoke
type
N = Airlock on Yoke (GB52 and GB53 Only)
P = Airpak Filter Regulator Mounted to Positioner (GB52 and GB53 Yoke Style)
Character 5
R = Airpak Filter Regulator Mounted to Positioner, with Airlock (GB52 and GB53 Yoke Style)
(Standard
S = Lever Operation (GB52 and GB53 Only)
Options)
T = Airpak Filter Regulator Mounted to Positioner (Except Lever and Yoke Styles)
U = Yoke Type
- GB52 1 1/4” Yoke Mount
-
GB53
1
11/16”
Yoke
Mount
NOTE: These same Yoke dimensions apply to options A, N and P
W = Lever Operation with Airpak Filter Regulator Mounted to Positioner
X = Standard (if none of the above options are chosen)
C = GC31 Commandaire Positioner with Cushion Load Regulator
H = GC32 Commandaire Positioner with Cushion Load Regulator
Character 6
K = GC33 Commandaire Positioner with Cushion Load Regulator
(Positioner)
V = GC34 Commandaire Positioner with Cushion Load Regulator
F = GC31 Commandaire Positioner with full reversal (GH232T Reversing Relay), and GFX04 Supply Filter
G
=
GC33
Commandaire
Positioner
with full reversal (GH232T Reversing Relay), and GFX04 Supply Filter
W = On / Off (Full Extend or Retract Operation Only)
6 = On / Off (Throttling type Head Plate without Positioner)
Character 7
A = No Spacer Bars or Lower Flange (for Type T or Type X in Character 5)
(Spacer Bars)
X = Standard configuration (Spacer Bars, Yoke, Lever)
A = 3-7 PSI
F = 6-18 PSI
K = 14-22 PSI
Character 8
B = 3-9 PSI
G = 6-30 PSI
L = 18-30 PSI
(Range Selection)
C = 3-15 PSI (Standard)
H = 7-11 PSI
M = 22-30 PSI
D = 3-27 PSI
J = 9-15 PSI
K = On/Off Operation Only
For GC31 through GC34, and On/Off Only
A = 57 cu. in System
C = 180 cu. in. System
E = 400 cu. in. System
G = 1000 cu. in. System
For Full Reversal Series – Extends Stem on Air Supply Failure
Character 9
B = 57 cu. in System
D = 180 cu. in. System
(Airlock)
F = 400 cu. in. System
H = 1000 cu. in. System
For Full Reversal Series – Retracts Stem on Air Supply Failure
T = 57 cu. in System
M = 180 cu. in. System
N = 400 cu. in. System
P = 1000 cu. in. System
L = Airlock – Lock in Last Position (includes GVB12AB Relay)
X = Absence of Specification – No Airlock function
Character 10
X = Absence of Specification
Characters 11-15
Stroke, in Inches (example, a 4 inch stroke would be 04000)
Stroke Length
Standard stroke lengths are as follows, however optional collars are used to reduce piston stroke from
standard stroke length, as applicable for the specified stroke length.
GB50
2”, 5” and 8”
GB52
1 1/8”, 4” and 6”
GB51
3” and 4”
GB53
1 ½”, 4”, 6”, 8” and 10”
