Data Sheet

1B Pump Governor
D100181X012
Product Bulletin
61.9:1B
December 2012
2
Specifications
Available Configurations
1B: Direct-acting with increased control pressure
closing push-down-to-closevalvessuchasFisherED
and ET
1BR: Reverse-acting with increased control pressure
opening push-down-to-open valves such as Fisher
EDR and ETR
Maximum Cylinder Pressure
(1)
48.3 bar (700 psi)
Spring Ranges
See table 1
Effective Piston Area
45 cm
2
(7.07 square inches)
Travel
Up to 19.1 mm (0.75 inch)
Travel Stops
Available for 6 and 11.1 mm (0.25 and 0.4375 inch)
travels (reverse acting constructions)
Construction Materials
Cylinder Cap and Yoke: Cast iron
Piston: Brass, chrome-plated
Cylinder: Brass
Piston Rod: Steel, zinc-plated
Piston Cup: Partial Nitrile or 100% Nitrile for leakfree
service
Maximum Cylinder Operating Temperature
(1)
130_C(265_F)
or 66_C(150_F) for leakfree service
Cylinder Connections
Seefigure2
Yoke Boss and Stem Diameters
mm INCHES
Yoke Boss Stem Yoke Boss Stem
54
71
9.5
12.7
2-1/8
2-13/16
3/8
1/2
APPROXIMATE WEIGHTS
Actuator with 54 mm (2-1/8 Inch) Yoke Boss: 9.1 kg
(20 pounds)
Actuator with 71 mm (2-13/16 Inch) Yoke Boss: 20.4
kg (45 pounds)
1. The pressure/temperature limits in this bulletin and any applicable standard or code limitation for valve should not be exceeded.
Table 1 . Spring Information
TYPE NUMBER
METRIC UNITS U.S. UNITS
SPRING PART
NUMBER
Pressure
Range, Bar
Spring
Rate,
N/mm
Sensitivity
mm/Bar
Safe Load,
N
Pressure
Range, Psig
Spring
Rate,
Lbf/in
Sensitivity
In./Psi
Safe Load,
Lbf
1B
6.6 t o 8.3
8.3 t o 13.5
13.5 t o 15.9
15.9 t o 22.1
22.1 t o 34.5
85.8
221
257
368
928
0.524
0.204
0.175
0.122
0.048
4715
8184
9786
13,545
23,575
95 to 120
120 to 195
195 to 230
230 to 320
320 to 500
490
1260
1470
2100
5300
0.014
0.006
0.005
0.003
0.001
1060
1840
2200
3045
5300
1F176827092
1E795327082
1E792427082
1E793327082
1H106827082
1BR
9.5 mm
(3/8 inch)
stem
6.6 t o 8.3
8.3 t o 13.5
13.5 t o 15.9
15.9 t o 22.1
85.8
221
257
368
0.524
0.204
0.175
0.122
4715
8184
9786
13,545
95 to 120
120 to 195
195 to 230
230 to 320
490
1260
1470
2100
0.014
0.006
0.005
0.003
1060
1840
2200
3045
1F176827092
1E795327082
1E792427082
1E793327082
12.7 mm
(1/2 inch)
stem
(1)
6.6 t o 8.3
8.3 t o 13.5
13.5 t o 15.9
15.9 t o 22.1
22.1 t o 34.5
85.8
221
257
368
928
0.524
0.204
0.175
0.122
0.048
4715
8184
9786
13,545
23,575
95 to 120
120 to 195
195 to 230
230 to 320
320 to 500
490
1260
1470
2100
5300
0.014
0.006
0.005
0.003
0.001
1060
1840
2200
3045
5300
1F176827092
1E795327082
1E792427082
1E793327082
1H106827082
1. If the valve/stem connection is cut down to 9.5 mm (3/8 inch), then the maximum relief pressure range is limited to 22.1 bar (320 psig).