Industrial Regulators
The industry standard for pressure regulators and flow control products.
Conversion Tables
TEMPERATURE CONVERSION FORMULAS
From Fahrenheit (°F) to Celsius (°C) (°F - 32) x 5/9
From Fahrenheit (°F) to Kelvin (K) (°F + 459.67) / 1.8
From Celsius (°C) to Fahrenheit (°F) (°C x 9/5) + 32
From Celsius (°C) to Kelvin (K) (°C + 273.15)
From Kelvin (K) to Fahrenheit (°F) (1.8 x K) - 459.67
From Kelvin (K) to Celsius (°C) (K - 273.15)
PRESSURE CONVERSION
FROM TO
bar kPa mm Hg (0°C) mm H
bar 1 100 750.064 10197.443 1.02 401.474 14.504 29.53
kPa 0.01 1 7.501 101.974 0.01 4.015 0.145 0.295
mm Hg (0°C) 0.001 0.133 1 13.595 0.001 0.535 0.019 0.039
O (4°C) 0.0001 0.01 0.074 1 0.0001 0.039 0.001 0.003
mm H
2
2
kg/cm
O (4°C) 0.002 0.249 1.868 25.4 0.003 1 0.036 0.074
in H
2
psi 0.069 6.895 51.715 703.089 0.07 27.681 1 2.036
in Hg (32°C) 0.034 3.386 25.4 345.324 0.035 13.595 0.491 1
0.981 98.067 735.561 10000.275 1 393.712 14.223 28.959
O (4°C) kg/cm
2
2
in H2O (4°C) psi in Hg (32°C)
VOLUMETRIC GAS FLOW CONVERSION
FROM TO
3
/hr SCFH SCFM in3/min Nliters/min
Nm
3
/hr 1 35.31 0.59 1,017 16.67
Nm
SCFH 0.03 1 0.02 28.8 0.47
SCFM 1.7 60 1 1,728 28.32
3
/min 0.001 0.03 0.0006 1 0.02
in
Nliters/min 0.06 2.12 0.04 61.02 1
VOLUMETRIC LIQUID FLOW CONVERSION
FROM TO
3
liters/sec liters/min m
liters/sec 1 60 3.6 2.12 127.1 15.85 13.2 0.38
liters/min 0.02 1 0.06 0.04 2.12 0.26 0.22 0.01
3
m
/h 0.28 16.67 1 0.59 35.31 4.4 3.67 0.1
3
/min 0.47 28.32 1.7 1 60 7.48 6.23 0.18
ft
3
/hr 0.01 0.47 0.03 0.02 1 0.12 0.1 0.003
ft
US gal/min 0.06 3.79 0.23 0.13 8.02 1 0.83 0.02
UK gal/min 0.08 4.55 0.27 0.16 9.63 1.2 1 0.03
barrels (petroleum)/min 2.65 159 9.54 5.62 336.9 42 34.97 1
/h ft3/min ft3/hr
US
gallon/min
UK
gallon/min
(petroleum)/min
barrels
2
Table of Contents
INTRODUCTION
Introduction to Regulators............................................................ 4
Industrial Regulator Quick Selection Table................................................ 6 - 7
®
Fisher
Regulators
Industrial Regulator Plant Utility Application Map................................. 8 - 9
Air
MR95 Series ..................................10
MR98 Series ..................................10
67C Series ....................................10
1301F/1301G Series ...........................11
67D Series ....................................11
627 Series ....................................11
63EG Series ...................................11
Steam
Type 92B .....................................12
Type 92S .....................................12
Type SR5 .....................................13
MR95 Series ..................................13
Type 92C .....................................13
MR98 Series ..................................13
Tank Blanketing/Vapor Recovery
T205 Series ...................................14
Type T205B ...................................14
T208 Series ...................................14
Type Y692 ....................................15
Type Y693 ....................................15
Type ACE95 ...................................15
Type 1190 ....................................15
Type 1290 ....................................15
Liquids
Type MR105 ..................................16
Type MR108 ..................................16
Type 92W.....................................16
Type 63EG-98HM .............................16
MR95 Series ..................................17
MR98 Series ..................................17
Type LR125 ...................................17
Type LR128 ...................................17
Type 1098-EGR................................17
Type 75A .....................................17
Process Gas
Type 1098-EGR ...............................18
MR95 Series ..................................18
MR98 Series ..................................19
T205 Series ...................................19
T208 Series ...................................19
T205VB Series ................................19
Fuel Gas
Type 310A ....................................20
Type EZR .....................................20
Y600A Series..................................20
Type 1098-EGR ...............................21
EZH and EZHSO Series .........................21
Type 99.......................................21
133 Series ....................................21
Regulator Tips......................................................................... 22 -23
3
Pressure Reducing Regulators
Direct-Operated
Pilot-Operated
Regulators are self-contained, control devices which use
energy from the controlled system to operate whereas
control valves require external power sources, transmitting
instruments, and control instruments.
Pressure Reducing Regulators
A pressure reducing regulator maintains a desired outlet
pressure while providing the required fluid flow to satisfy
a downstream demand. The pressure which the regulator
maintains is the outlet pressure setting (setpoint) of
the regulator.
Pressure Reducing Regulator Type
The two main types of regulators:
1. Direct-Operated
2. Pilot-Operated
SPRING
DIAPHRAGM
VALVE
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
Figure 1. Direct-Operated Regulator
Direct-Operated Regulators
Direct-Operated regulators are the simplest style of the
regulators. At low set pressures, typically below 1 psig /
0.07 bar, they can have very accurate (±1%) control. At
high control pressures, up to 500 psig / 34.5 bar, 10% to
20% control is typical.
In operation, a direct-operated, pressure reducing
regulator senses the downstream pressure through either
internal pressure registration or external control line. This
downstream pressure opposes a spring which moves the
diaphragm and valve plug to change the size of the flow
path through the regulator.
Direct-operated regulators have many commercial and
residential uses. Typical applications include industrial,
commercial, and domestic gas service or instrument air.
Pilot-Operated Regulators
MAIN
PILOT
REGULATOR
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
LOADING PRESSURE
Figure 2. Pilot-Operated Regulator
REGULATOR
Pilot-Operated regulators are preferred for high flow rates
or where precise pressure control is required. A popular
type of pilot-operated system uses two-path control.
In two-path control, the main valve diaphragm responds
quickly to downstream pressure changes, causing an
immediate correction in the main valve plug position.
At the same time, the pilot diaphragm diverts some of the
reduced inlet pressure to the other side of the main valve
diaphragm to control the final positioning of the main
valve plug. Two-path control results in fast response and
accurate control.
Pressure Reducing Regulator Selection
The majority of applications require a pressure reducing
regulator. Assuming the application calls for a pressure
reducing regulator. The following parameters must
be determined:
• Outlet pressure to be controlled
• Inlet pressure to the regulator
• Capacity required
• Shut-off capability required
• Process fluid
• Process fluid temperature
• Accuracy required
• Pipe size required
• End connection style
• Material requirements
• Control line needed
• Overpressure protection
4
Relief Valve / Backpressure Regulator
Relief Valve
Backpressure Regulator
Relief Valves and Backpressure Regulators
A pressure relief valve is a control device that opens to relieve
fluid to atmosphere during an overpressure occurrence. A
backpressure regulator is a control device that maintains a
constant upstream pressure throughout a given flow range.
Relief Valve Types
Relief valves are available in four general types: pop type,
direct-operated, pilot-operated, and internal relief valves.
Direct-Operated Relief Valves
System pressure is referenced under a diaphragm and
opposed by a spring. As system pressure increases past the
setpoint, the relief valve opens which allows fluid to escape
and protects the system. The increase in pressure above
the relief setpoint that is required to produce more flow
through the relief valve is referred to as pressure buildup.
SPRING
DIAPHRAGM
VALVE
CONTROL
LINE
PILOT
RESTRICTION
PILOT
EXHAUST
FLOW
INLET PRESSURE LOADING PRESSURE
Figure 4. Pilot-Operated Relief Valve
EXHAUSTATMOSPHERIC PRESSURE
MAIN RELIEF
VALVE
MAIN REGULATOR
EXHAUST
Pilot-operated relief valves are used in applications
requiring high-capacity and low-pressure buildup.
Internal Relief
The regulator shown in Figure 5 includes an internal relief
valve. The relief valve has a measuring element (the main
regulator diaphragm), a loading element (a light spring),
and a restricting element (a valve seat and disk).
OPENED INTERNAL RELIEF
LARGE OPENING FOR RELIEF
VENT
FLOW
SYSTEM PRESSURE LOWER-PRESSURE SYSTEM
Figure 3. Direct-Operated Relief Valve
(USUALLY ATMOSPHERE)
Direct-Operated relief valves are commonly used in industry
to protect industrial furnaces and other equipment.
Pilot-Operated Relief Valves
In normal operation, when system pressure is below
setpoint of the relief valve, the pilot remains closed.
This allows loading pressure to register on top of the
main relief valve diaphragm. Loading pressure on top
of the diaphragm is opposed by an equal pressure (inlet
pressure) on the bottom side of the diaphragm. With
little or no pressure differential across the diaphragm, the
spring keeps the valve seated. When the system pressure
increases past the setpoint, the pilot opens and exhausts
the loading pressure from the top of the relief valve main
diaphragm which allows the main valve to open.
CLOSED RESTRICTION
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
Figure 5. Internal Relief
The relief valve assembly is located in the center of
the regulator diaphragm. Internal relief is often used
in industrial applications where atmospheric exhaust is
acceptable, and low buildup is not required.
Backpressure Regulator Selection
Backpressure regulators control the inlet pressure rather
than the outlet pressure. The selection criteria for the
backpressure regulator is the same as for a pressure
reducing regulator.
5
Industrial Regulators Selection Table
Pressure Reducing Regulators
Liquid
Tank Blanketing
Process Gas
Fuel Gas
TYPE OR
SERIES
OPERATION
METHOD
BODY SIZE, NPS
INLET
PRESSURE,
psig / bar
67CS Direct 1/4 400 / 27.6 4350 / 117 - 71.1:67C
67D Direct 1/2 400 / 27.6 20,900 / 560 11 71.1:67D
1301 Direct 1/4 6000 / 414 4500 / 121 11 71.1:1301
MR95 Direct 1/4 to 2 1000 / 68.9
SR5 Direct 1/2 to 3 210 / 14.5
92B Pilot 1, 1-1/2, 2, 3, and 4 300 / 20.7
92S Pilot 1 to 6 x 4 300 / 20.7
92C Pilot 1/2, 3/4, and 1 300 / 20.7
75A Direct 1/2 to 2-1/2 200 / 13.8
92W Pilot 1 to 4 300 / 20.7
627 Direct 3/4, 1, and 2 2000 / 138 162,000 / 4342 11 71.1:627
627W Direct 3/4, 1, and 2 900 / 62.1
MR105 Direct 1, 2, 3, and 4 400 / 27.6
1098-EGR Pilot 1 to 12 x 6 400 / 27.6
MAXIMUM
1190 Pilot
99 Pilot 2 1000 / 69.0 265,000 / 7102 21 71.2:99
66 Direct 2, 3, and 4 10 / 0.69 49,000 / 1313 - 71.1:66
T205 Direct 3/4 and 1 200 / 13.8 12,919 / 346.2 14 74.1:T205
T205B Direct 3/4 and 1 200 / 13.8 18,568 / 498 14 74.1:T205B
Y692 Direct 1-1/2 and 2 150 / 10.3 19,820 / 531 15 74.1:Y692
Y693 Direct 1-1/2 and 2 150 / 10.3 26,700 / 716 15 74.1:Y693
133 Direct 2 150 / 10.3 170,000 / 4556 21 71.1:133
ACE95 Pilot 3/4, 1, and 1 x 2 200 / 13.8
ACE95jr Direct 1/2, 1 x 1/2, and 1 200 / 13.8 3330 / 89.2 - 74.1:ACE95jr
ACE95sr Pilot 2 200 / 13.8
ACE97 Pilot
EZR Pilot 1 to 8 1500 / 103
299H Pilot 1-1/4, 1-1/2, and 2 175 / 12.1 108,120 / 2898 - 71.2:299H
1, 2, 3, 4, 6, 8 x 6, and
12 x 6
Pad: 1/2, 1, and 2 and
Depad: 1-4
400 / 27.6
200 / 13.8
MAXIMUM
FLOW
CAPACITY,
SCFH / Nm
17,000 lbs/h /
6820 lbs/h /
42,400 lbs/h /
19,234 kg/h
45,100 lbs/h /
20,457 kg/h
3600 lbs/h /
1650 gpm /
11,934 gpm /
45,170 l/min
2,811,000 /
Pad: 499,600 /
106,200 / 2846
26,138,000 /
3
7600 kg/h
3096 kg/h
1633 kg/h
260 gpm /
984 l/min
960 gpm /
3720 l/min
82 gpm /
310 l/min
6240 l/min
75,335
499,600 /
13,390
499,600 /
13,390
13,389
De-pad:
700,498
PAGE BULLETIN NO.
/h
Steam
Air
OUTLET PRESSURE
RANGE*, psig / bar
0-125 / 0-8.6 67C Direct 1/4 250 / 17.2 4350 / 117 10 71.1:67C
0-150 / 0-10.3
0-150 / 0-10.3
10-500 / 0.69-34.5
2-400 / 0.14-27.6
2-135 / 0.14-9.3
2-250 / 0.14-17.2
2-250 / 0.14-17.2
5-250 / 0.34-17.2
20-80 / 1.4-5.5
2-250 / 0.14-17.2
5-500 / 0.34-34.5
10-500 / 0.69-34.5
5 to 300 / 0.34 to 20.7
4"wc-300 / 10 mbar-20.7
0.25"wc-7 / 0.6 mbar-0.48
2"wc-100 / 5 mbar-6.9
2"wc-5 / 5 mbar-0.34
1"wc-7 / 2 mbar-0.48
1"w.c.-7 psig / 2 mbar-0.48 bar
1"wc-10 / 2 mbar-0.69
0.5"wc-10 / 1 mbar-0.69
2"wc-60 / 5 mbar-4.1
-5"wc-1.5 / -12 mbar-0.10
-5"wc-1.5 / -12 mbar-0.10
-5"wc-1.5 / -12 mbar-0.10
Pad: 0.5"wc-2.2 / 1 mbar-0.15
Depad: 4"wc-2 / 10 mbar-0.14
6"wc-1000 / 15 mbar-69.0
3.5"wc-60 / 9 mbar-4.1
REFERENCES
13 71.1: MR95
13 71:1:SR5
12 71.2:92B
12 71.2:92S
13 71.2:92C
17 71.1:75A
16 71.2:92W
- 71.1:627W
16 71.1:MR105
18 71.2:1098-EGR
15 74.1:1190
15 74.1:ACE95
- 74.1:ACE95
- 74.3:ACE97
20 71.2:EZR
6
Air
Steam
Tank Blanketing
Liquid
Process Gas
Fuel Gas
Selection Table
Backpressure Regulators
Relief Valve
OUTLET PRESSURE
RANGE*, psig / bar
15-150 / 1-10.3 LR125 Pilot 1, 2, 3, and 4 300 / 20.7
35-375 / 2.4- 25.9
4"w.c. to 7 psig /
10 mbar to 0.48 bar
2"wc-10 / 5 mbar-0.69
14.5-1160 / 1.0-80.0
3-500 / 0.21-34.5
10-700 / 0.69-48.3
5"wc-75 / 12 mbar-5.2
3-125 / 0.21-8.6
15-375 / 1.0-25.9
2-375 / 0.14-25.9
5 to 300 / 0.34 to 20.7
2-125 / 0.14-8.6
10-400 / 0.69-27.6
2"wc-5 / 5 mbar-0.34
2"wc-7 / 5 mbar-0.48
2"wc-7 / 5 mbar-0.48
0.5"wc-7 / 1 mbar-0.48
3-60 / 0.21-4.1
3-150 / 0.21-10.3
14-125 / 0.97-8.6
2-150 / 0.14-10.3
0-5 / 0-0.35 vacuum
1"wc-3 / 2 mbar-0.21
0-12.8 / 0-0.88
1"wc-3 / 2 mbar-0.21
*Inlet/Outlet Pressure Range and Maximum Inlet Pressure are indicated as psig/bar or inches w.c./mbar.
TYPE OR
SERIES
LR128 Pilot 1, 2, 3, and 4 450 / 31.0
Y600A Direct 3/4 and 1 150 / 10.3 6660 / 178 20 71.1:Y600A
CS800 Direct 1-1/4 ,1-1/2, and 2 125 / 8.6 36,270 / 974 - 71.1:CS800
63EG-98HM Pilot 2 to 6 and 8 x 6 450 / 31.0
MR98 Direct 1/4 to 2 400 / 27.6
MR108 Direct 1, 2, 3, and 4 400 / 27.6
167D Direct 1/4 and 1/2 400 / 27.6 - - - - - 71.7:167D
167DA Direct 1/4 and 1/2 125 / 8.6 - - - - - 71.7:167D
T205VB Direct 3/4 and 1 200 / 13.8 2468 / 66 19 71.3:T205VB
Y692VB Direct 1-1/2 and 2 30 / 2.1 2500 / 67 - 71.3:Y692VB
T208VR Direct 3/4 and 1 Full Vacuum 1345 / 36.0 - 71.3:T208VR
Y696VR Direct 1-1/2 and 2 Full Vacuum 6953 / 186 - 71.3:Y696VR
OPERATION
METHOD
EZH Pilot 1 to 4 1500 / 103
630 Direct 1 and 2 1500 / 103 96,000 / 2573 - 71.1:630
310A Pilot 1 to 4 x 6 1500 / 103
289 Direct 1/4, 3/4, 1, and 2 100 / 6.9 120,000 / 3216 - 71.4:289
1808 Pilot 2 150 / 10.3 298,000 / 7986 - 71.4:1808
SR8 Direct 1/2 to 3 210 / 14.5
63EG Pilot 1 to 6 and 8 x 6 400 / 27.6
66R Direct 2, 3, and 4 8 / 0.55 115,000 / 3082 - 71.4:66
T208 Direct 3/4 and 1 75 / 5.2 2286 / 61.3 14 74.2:T208
Y696 Direct 1-1/2 and 2 15 / 1.0 13,100 / 351 - 74.2:Y696
1290 Pilot
119 Direct 3/4, 1, and 1-1/4 150 / 10.3 - - - - - 71.1:119
168 Direct 1/4 150 / 10.3 - - - - - 71.7:168
BODY SIZE, NPS
1, 2, 3, 4, 6, 8 x 6, and
12 x 6
This catalog is a brief overview of the Fisher® product line.
Please visit www.fisherregulators.com to view the entire Fisher offering.
MAXIMUM
INLET
PRESSURE,
psig / bar
12.5 / 0.86 327,400 / 8774 15 74.2:1290
MAXIMUM
FLOW
CAPACITY,
SCFH / Nm
2052 gpm /
7769 l/min
3368 gpm /
12,748 l/min
13,833,000 /
370,724
21,170,000 /
567,356
4900 gpm /
18,547 l/min
300 gpm /
1150 l/min
1460 gpm /
5530 l/min
5460 lbs/h /
2479 kg/h
8,795,000 /
235,706
REFERENCES
PAGE BULLETIN NO.
3
/h
17 71.2:LR125
17 71.4:LR128
71.2:EZH and
21
20 71.2:310A
16 71.4:63EG-98HM
17 71.4: MR98
16 71.4:MR108
- 71.4:SR8
11 71.4:63EG
EZHSO
7
Industrial Regulators
For Plant Utility Applications
Industrial
Gas Plant
Regulator
Control Line
Oxygen
Hydrogen
Nitrogen
Water
MR105
Control Valve
Fuel Gas
Pneumatic Air
Steam
Process Liquids
Lube Oil
LR128
MR95
Pump
MR95
easy-e
Water
Tower
167DA
Process
Storage
MR98
MR95
67DFR
Safety Shower/
Eyewash Station
92C
Compressor
63EG-
98HM
1098
EGR
Feedwater Tank
66
Process Reactor
T205
ACE 95 1290
T208VR
Process Reactor
Instrument Purge
easy-e
Glove
Box
Tank Blanket
Vapor
Recovery
T205VB
Vacuum
Regulator
Vacuum
Breaker
Packaging
Station
Vacuum
Pump
1098
EGR
67DFR
Batch
Reactor
Boiler
Heat Exchanger
easy-e
92B
92S
Air
• Compact
• Rugged Construction
• Integral Filters
• Wide Selection
• Built to Last
• Time-Proven Design
Manufacturing and process plants use
compressed air as a power supply for many
devices within the plant. Plant air, also called
shop air, is used for cooling and as a power
source for pneumatic tools, sand blasters,
sprayers, conveyors, robotics, and other
mechanical tools. Instrument air is used to
power instruments, such as controllers,
positioners, switching valves, panel loaders,
and volume boosters.
Plant air or shop air runs from compressor
throughout the plant. Pressure reducing
regulators control the pressure to devices at
each point of use of the air line.
Instrument air can come from the plant air line,
Pressure Reducing
MR95 Series
Body Size
Outlet Pressure Range 2 to 400 psig / 0.14 to 27.6 bar
Maximum Inlet
Pressure
Maximum Capacity 510,000 SCFH / 13,668 Nm
Operation Method Direct-Operated
Body Material
Bulletin No. 71.1:MR95
The MR95 Series is a versatile, compact, high-capacity direct-operated regulator capable
of solving the toughest pressure control applications. Typical applications include
instrument air supply for large actuators, test fixtures, and general pneumatic supply. The
regulator is available with differential pressure control, high temperature, and
high-pressure optional constructions.
Pressure Reducing
NPS 1/4, 1/2, 3/4, 1, 1-1/2, and 2 /
DN 15, 20, 25, 40, and 50
1000 psig / 68.9 bar
3
/h
Cast Iron, Steel, Stainless Steel,
Hastelloy
®
C, and Monel
®
67C Series
Body Size NPS 1/4
Outlet Pressure Range 0 to 150 psig / 0 to 10.3 bar
Maximum Inlet
Pressure
Maximum Capacity 4350 SCFH / 117 Nm
Operation Method Direct-Operated
Body Material Aluminum and Stainless Steel
Bulletin No. 71.1:67C
The 67C Series is a compact, high accuracy instrument air regulator designed for use
with today’s digital valve controllers. The unit is available with a 5 or 40 micron filter for
protection of the instrument being supplied. The Smart Bleed™ option and leak proof
internal relief minimize loss of supply air improving system integrity. Other options
include outlet gauge, high and low temperature, and panel mounting.
400 psig / 27.6 bar
3
/h
or they may be separate air lines throughout
the plant. In either case, the air supplied to the
instruments must be cleaned and dried before
it enters the instruments. Filters and dryers
remove dust, moisture, and other debris from
the air.
10
Relief/Backpressure
MR98 Series
Body Size
Relief Pressure Range
Maximum Inlet
Pressure
Maximum Capacity 206,000 SCFH / 5510 Nm
Operation Method Direct-Operated
Body Material
Bulletin No. 71.4:MR98
The MR98 Series is used in a variety of process gas backpressure and relief applications
including corrosive gases and cryogenic applications. The unit is available with a remote
control line, differential pressure control and high-pressure optional constructions.
NPS 1/4, 1/2, 3/4, 1, 1-1/2, and 2 /
DN 15, 20, 25, 40, and 50
2 to 375 psig /
0.14 to 25.9 bar
400 psig / 27.6 bar
3
/h
Cast Iron, Steel, Stainless Steel,
Hastelloy
®
C, and Monel
®
Pressure Reducing
Pressure Reducing
1301 Series
Body Size NPS 1/4
Outlet Pressure Range 10 to 500 psig / 0.69 to 34.5 bar
Maximum Inlet Pressure 6000 psig / 414 bar
3
Maximum Capacity 4500 SCFH / 121 Nm
Operation Method Direct-Operated
Body Material Brass and Stainless Steel
Bulletin No. 71.1:1301
The 1301 Series regulators are high-pressure regulators designed to reduce supply
pressure of instrument air supply regulators and pilots. The units have options for spring
case with tapped vents and adjusting screw closing cap.
/h
Pressure Reducing
67D Series
Body Size NPS 1/2 / DN 15
Outlet Pressure Range 0 to 150 psig / 0 to 10.3 bar
Maximum Inlet Pressure 400 psig / 27.6 bar
3
Maximum Capacity 20,900 SCFH / 560 Nm
Operation Method Direct-Operated
Body Material Aluminum and Stainless Steel
Bulletin No. 71.1:67D
The 67D Series regulators are typically used to deliver constant reduced pressure of
gaseous fluids to pilot-operated controllers and other pneumatic instrumentation.
/h
627 Series
Body Size
Outlet Pressure Range 5 to 500 psig / 0.34 to 34.5 bar
Maximum Inlet Pressure 2000 psig / 138 bar
Maximum Capacity 162,000 SCFH / 4342 Nm
Operation Method Direct-Operated
Body Material
Bulletin No. 71.1:627
The 627 Series direct-operated pressure reducing regulators are for low and
high-pressure systems. Typical air applications include high-capacity air supply to large
valve actuators.
Relief/Backpressure
NPS 3/4, 1, and 2 /
DN 20, 25, and 50
Ductile Iron, Steel, and
Stainless Steel
3
/h
63EG Series
Body Size
Outlet Pressure
Maximum Inlet
Pressure
Maximum Capacity
Operation Method Pilot-Operated
Body Material
Bulletin No. 71.4:63EG
The 63EG Series is a compact, fast response, high accuracy backpressure / relief valve
which is suitable for gas or liquid service. The valve's design allows easy maintenance and
is available with noise reducing trim.
NPS 1, 2, 3, 4, 6, and 8 x 6 /
DN 25, 50, 80, 100, 150, and
200 x 150
10 to 400 psig /
Range
0.69 to 27.6 bar
400 psig / 27.6 bar
8,795,000 SCFH /
235,706 Nm
Cast Iron, Steel, and
Stainless Steel
3
/h
11
Steam
• High Turndown
• Rugged Construction
• Noise Reduction
• Low Maintenance
• Accurate
• Reliable
• Long Service Life
Steam is used throughout industries for
process and space heating. Within the process
industries, steam is used in oil refineries; pulp
and paper mills; chemical production, such
as ethylene and ammonia; food and grain
processing; and textiles.
Refineries and chemical plants use steam tracing
to reduce pumping costs of viscous material
and prevent freezing of process piping. Steam is
used for heat exchangers and reactors to assist
or create process chemical or thermal reactions.
Paper mills utilize major steam generation
systems to generate power and to dry paper
products. Steam is widely used for district
energy systems found in major municipalities
and central plants of universities and hospitals.
Pressure Reducing
Type 92B
Body Size
Outlet Pressure Range
Maximum Inlet
Pressure
Maximum Temp
Capacity
Maximum Capacity
Operation Method Pilot-Operated
Body Material
Bulletin No. 71.2:92B
The Type 92B regulator is ideal for use as a main Pressure Reducing Valve in industrial
process heating applications such as heat exchangers, evaporators, digesters, and
reactors. Commercial applications include district energy systems and hot water
heat exchangers.
Pressure Reducing
NPS 1, 1-1/2, 2, 3, and 4 /
DN 25, 40, 50, 80, and 100
2 to 250 psig /
0.14 to 17.2 bar
300 psig / 20.7 bar
600°F / 316°C*
42,400 lbs/h /
19,234 kg/h
Cast Iron, Steel, and
Stainless Steel
Type 92S
Body Size
Outlet Pressure
Maximum Inlet
Pressure
Maximum Temp
Capacity
Maximum
Capacity
Operation
Method
Body Material
Bulletin No. 71.2:92S
The Type 92S regulator is piston actuated for high cycle steam service with hardened trim
for improved durability. This valve should be used with clear, dry, or superheated steam.
Noise reduction trim is available.
NPS 1, 1-1/2, 2, 2-1/2, 3, 4, and
6 × 4 / DN 25, 40, 50, 65, 80,
100, and 150 x 100
2 to 250 psig /
Range
0.14 to 17.2 bar
300 psig / 20.7 bar
650°F / 343°C*
45,100 lbs/h / 20,457 kg/h
Pilot-Operated
Cast Iron, Steel, and
Stainless Steel
To minimize piping cost, steam is generated
and distributed at much higher pressures and
temperatures than required by the process
load. Fisher
®
regulators are utilized in these
applications to reduce the steam pressure to a
usable level and to accurately maintain process
fluid temperatures.
12
* Maximum temperature limitation may vary according to body and construction materials.
Please refer to the product Bulletin or local Sales Office for further information.
Pressure Reducing
Pressure Reducing
Type SR5
Body Size
Outlet Pressure Range 2 to 135 psig / 0.14 to 9.3 bar
Maximum Inlet Pressure 210 psig / 14.5 bar
Maximum Temp
Capacity
Maximum Capacity 6820 lbs/h / 3096 kg/h
Operation Method Direct-Operated
Body Material
Bulletin No. 71.1:SR5
The Type SR5 regulator is a compact, large capacity, direct-operated pressure reducing
regulator. It is designed for use in applications where a sanitary design is essential, such as
pharmaceutical, biotech, or food and beverage industries. A backpressure regulator is also
available in Type SR8.
Pressure Reducing
NPS 1/2, 3/4, 1, 1-1/2 x 1, 1-1/2,
2, and 3 / DN 15,20, 25, 40 x 25,
40, 50, and 80
400°F / 204°C*
316L Stainless Steel,
20 μin / 0.5 μm Ra
MR95 Series
Body Size
Outlet Pressure Range
Maximum Inlet
Pressure
Maximum Temp
Capacity
Maximum Capacity 17,000 lbs/h / 7600 kg/h
Operation Method Direct-Operated
Body Material
Bulletin No. 71.1: MR95
The MR95 Series is a versatile, compact, high-capacity direct-operated regulator capable
of the toughest pressure control applications. Typical applications include fuel oil steam
atomization, superheated steam, boiler feed water, steam tracing, and sterilizers.
NPS 1/4, 1/2, 3/4, 1, 1-1/2, and 2 /
DN 15, 20, 25, 40, and 50
2 to 400 psig /
0.14 to 27.6 bar
1000 psig / 68.9 bar
650°F / 343°C*
Cast Iron, Steel, Stainless Steel,
Hastelloy
®
C, and Monel
®
Type 92C
Body Size
Outlet Pressure Range
Maximum Inlet Pressure 300 psig / 20.7 bar
Maximum Temp Capacity 650°F / 343°C*
Maximum Capacity 3600 lbs/h / 1633 kg/h
Operation Method Pilot-Operated
Body Material
Bulletin No. 71.2:92C
The Type 92C regulator is an economical cast iron, steel, or stainless steel pilot-operated
pressure reducing used in steam, liquid, or hot air service. Its compact design and
high-capacity make it ideal for packaged skid systems.
Relief/Backpressure
NPS 1/2, 3/4, and 1 /
DN 15, 20, and 25
5 to 250 psig /
0.34 to 17.2 bar
Cast Iron, Steel, and
Stainless Steel
MR98 Series
Body Size
Relief Pressure Range
Maximum Inlet
Pressure
Maximum Temp
Capacity
Maximum Capacity 7300 lbs/h / 3300 kg/h
Operation Method Direct-Operated
Body Material
Bulletin No. 71.4:MR98
The MR98 Series is used in a variety of steam backpressure/relief applications, such as
power generation, heating and cooling systems, and process system. The unit is available
with differential pressure control and high-pressure optional constructions.
NPS 1/4, 1/2, 3/4, 1, 1-1/2, and 2 /
DN 15, 20, 25, 40, and 50
2 to 375 psig /
0.14 to 25.9 bar
400 psig / 27.6 bar
450°F / 232°C*
Cast Iron, Steel, Stainless Steel,
Hastelloy
®
C, and Monel
®
* Maximum temperature limitation may vary according to body and construction materials.
Please refer to the product Bulletin or local Sales Office for further information.
13
Tank Blanketing
Tank Blanketing
• Fully Balanced System
• High-Capacity
• High Sensitivity
• Tight Shutoff
• Low Setpoints
• In-line Maintenance
• Broad Material Selection
Tank Blanketing, or padding, is the process and
practice of covering the surface of a stored
commodity, usually a liquid, with an inert gas. If
that commodity is volatile or toxic, tank blanketing
can prevent it from harming workers, equipment,
and the environment. When the commodity is a
food or other substance, blanketing protects it from
oxidation or contamination through exposure to air
or moisture. In most cases, tank blanketing gas is
pure, dry nitrogen.
Blanketing can prevent liquids from vaporizing into
the atmosphere and can maintain the tank’s vapor
space above a flammable or combustible liquid to
reduce potential ignition while pumping. It can
make up the volume of liquid displaced in or out of
a tank, or it can make up volume caused by thermal
changes of the tank’s contents, preventing the
creation of a vacuum or excess operating pressure
that could damage the tank.
T205 Series
Body Size
Control Pressure Range
Maximum Inlet Pressure 200 psig / 13.8 bar
Flow up to
Operation Method Direct-Operated
Body Material
Bulletin No. 74.1:T205
The T205 Series is a compact tank blanketing regulator ideal for blanketing small tanks
and vessels. The unit is easy to install and to maintain.
For larger applications, the Type Y692 is available in NPS 1-1/2 and 2 / DN 40 and 50 sizes.
Tank Blanketing
NPS 3/4 and 1 /
DN 20 and 25
1-inch w.c. to 7 psig /
2 mbar to 0.48 bar
12,919 SCFH /
346.2 Nm
Cast Iron, Steel, and
Stainless Steel
3
/h of Nitrogen
Type T205B
Body Size
Control Pressure Range
Maximum Inlet
Pressure
Flow up to
Operation Method Direct-Operated
Body Material
Bulletin No. 74.1:T205B
The Type T205B balanced tank blanketing regulator is a direct-operated regulator with
fully balanced plug design to reduce inlet pressure sensitivity and with a large diaphragm
to accurately control tank pressure at low pressure settings on tank blanketing systems.
NPS 3/4 and 1 /
DN 20 and 25
2-inches w.c. to 7 psig /
5 mbar to 0.48 bar
200 psig / 13.8 bar
18,568 SCFH /
3
/h of Nitrogen
498 Nm
Cast Iron, Steel, and
Stainless Steel
Vapor recovery systems are mainly used to prevent
toxic vapors from escaping into the atmosphere.
When adding liquid to the tank or when the outside
temperature rises, causing the vapor inside the tank
to expand, the vapor recovery system senses the
increase in tank pressure and vents the excessive
tank pressure to a vapor recovery system.
14
Vapor Recovery
T208 Series
Body Size
Control Pressure Range
Maximum Inlet Pressure 75 psig / 5.2 bar
Flow up to
Operation Method Direct-Operated
Body Material
Bulletin No. 74.2:T208
The T208 Series is ideal for small vapor recovery systems. The unit may also be utilized as
a backpressure or relief valve. A larger NPS 1-1/2 and 2 DN 40 and 50 units are available in
the Type Y696.
NPS 3/4 and 1
DN 20 and 25
2-inches w.c. to 7 psig /
5 mbar to 0.48 bar
2286 SCFH /
3
/h of Nitrogen
61.3 Nm
Cast Iron, Steel, and
Stainless Steel
Tank Blanketing
Tank Blanketing
Type Y692
Body Size
Control Pressure Range
Maximum Inlet
Pressure
Body Orientation In-line or Angle
Flow up to
Operation Method Direct-Operated
Body Material
Bulletin No. 74.1:Y692
The Type Y692 is a direct-operated regulator used for accurate pressure control on very
low-pressure blanketing systems. The downstream pressure is sensed directly by the
diaphragm through the pitot tube providing quick response. Large diaphragm areas
provide more precise control even at low-pressure settings and the pilot tube also creates
a dynamic boost that helps provide greater capacity.
Tank Blanketing
NPS 1-1/2 and 2 /
DN 40 and 50
1-inch w.c. to 10 psig /
2 mbar to 0.69 bar
150 psig / 10.3 bar
19,820 SCFH /
3
/h of Nitrogen
531 Nm
Cast Iron, WCC Steel, and
Stainless Steel
Type Y693
Body Size
Control Pressure Range
Maximum Inlet Pressure 150 psig / 10.3 bar
Flow up to
Operation Method Direct-Operated
Body Material
Bulletin No. 74.1:Y693
The Type Y693 utilizes a balanced trim design and large diaphragm area to provide
the accuracy of a pilot-operated regulator in a direct-operated design. The design also
provides minimal hysteresis and low inlet pressure sensitivity.
NPS 1-1/2 and 2 /
DN 40 and 50
0.5-inch w.c. to 10 psig /
1 mbar to 0.69 bar
26,700 SCFH /
3
/h of Nitrogen
716 Nm
Cast Iron, Steel, and
Stainless Steel
Type 1190
Body Size
Control Pressure
Maximum Inlet
Pressure
Flow up to
Operation
Method
Body Material
Bulletin No. 74.1:1190
The Type 1190 provides very accurate pressure control on low-pressure blanketing
systems. The regulator helps to control emissions and provides protection against any
contamination from atmospheric conditions.
Vapor Recovery
NPS 1, 2, 3, 4, 6, 8 x 6, and 12 x 6 /
DN 25, 50, 80, 100, 150,
200 x 150, and 300 x 150
0.25-inch w.c. to 7 psig /
Range
0.6 mbar to 0.48 bar
400 psig / 27.6 bar
2,811,000 SCFH /
75,335 Nm
Pilot-Operated
Cast Iron, Steel, and
Stainless Steel
3
/h of Nitrogen
Type 1290
Body Size
Control Pressure
Maximum Inlet
Pressure
Flow up to
Operation
Method
Body Material
Bulletin No. 74.2:1290
The Type 1290 vapor recovery valve is a very accurate high-capacity which monitors
the tank vapor pressure and opens when the tank pressure increases above the desired
setpoint. The unit is ideal for use with vapor recovery systems because it is not affected by
changes in pressure of the recovery system.
NPS 1, 2, 3, 4, 6, 8 x 6, 12 x 6 /
DN 25, 50, 80, 100, 150,
200 x 150, and 300 x 150
0.5-inch w.c. to 7 psig /
Range
1 mbar to 0.48 bar
12.5 psig / 0.86 bar
327,400 SCFH /
3
8774 Nm
Pilot-Operated
Cast Iron, Steel, and
Stainless Steel
/h of Nitrogen
Tank Blanketing
ACE95 Series
Body Size
Control Pressure
Maximum Inlet
Pressure
Body Orientation In-line or Angle
Flow up to
Operation Method Pilot-Operated
Body Material Stainless Steel
Bulletin No. 74.1:ACE95
The ACE95 Series is ideal for accurate pressure control on low-pressure blanketing
systems. The oversized actuator offers high sensitivity to changes in tank pressure and
high accuracy to pressure control. The ACE97 Series utilizes a single pilot to control both
the tank blanketing and vapor recovery minimizing the issues with overlapping setpoints.
NPS 3/4, 1, 1 x 2, and 2 /
DN 20, 25, 25 x 50, and 50
-5-inch w.c. to 1.5 psig /
Range
-12 mbar to 0.10 bar
200 psig / 13.8 bar
499,600 SCFH /
13,390 Nm
3
/h of Nitrogen
15
Liquid
• Highest Quality Construction
• Best Product Selection
• Large Turndown Ratios
• Excellent Fluid Capability
• Quick and Easy Maintenance
• Application Experience
Any substance that is capable of flowing or of
being poured is known as a liquid. One of the
most common liquids that we come in contact
with on a daily basis is water. Other liquids
include detergents, paints, aqueous chemicals,
fuels, and oil.
Liquids differ from gases as they are
incompressible and viscous. Because of these
characteristics, special consideration must be
given when selecting a regulator. All regulator
parts that touch the fluid must be compatible
with the fluid. The regulator design may require
modifications or special materials.
Pressure Reducing
Type MR105
Body Size
Outlet Pressure Range
Maximum Inlet Pressure 400 psig / 276 bar
Maximum Capacity 1650 gpm / 6240 l/min
Operation Method Direct-Operated
Body Material
Maximum Temp Capability 250°F / 121°C*
Bulletin No. 71.1:MR105
The Type MR105 is fast-response, high-capacity, direct-operated multi-purpose regulator
designed to handle different applications and flow media. It is available in linear and quick
opening trim cages and is designed to meet API 614 as required by lube oil manufacturers.
Relief/Backpressure
NPS 1, 2, 3, and 4 /
DN 25, 50, 80, and 100
5 to 300 psig /
0.34 to 20.7 bar
Cast Iron, Steel, and
Stainless Steel
Type MR108
Body Size
Backpressure Control
Maximum Inlet Pressure 400 psig / 27.6 bar
Maximum Capacity 1460 gpm / 5530 l/min
Operation Method Direct-Operated
Body Material
Maximum Temp Capability 250°F / 121°C*
Bulletin No. 71.4:MR108
The Type MR108 regulators are direct-operated, backpressure, high-capacity, multipurpose regulators. It provides a simple, reliable, and economical backpressure control
in multi-purpose applications suitable for different flow media including liquid, air, and
gas. Applications include lube oil systems and any application where speed of response is
critical, minimum differential pressure is a requirement, or fluid is not free of impurities.
NPS 1, 2, 3, and 4 /
DN 25, 50, 80, and 100
5 to 300 psig / 0.34 to 20.7 bar
Range
Cast Iron, Steel, and
Stainless Steel
Pressure Reducing
Type 92W
Body Size
Outlet Pressure Range
Maximum Inlet
Pressure
Maximum Capacity 960 gpm / 3720 l/min
Operation Method Pilot-Operated
Body Material Cast Iron and Steel
Bulletin No. 71.2:92W
The Type 92W regulator is piston actuated for high cycle liquid service. The design
utilizes hardened stainless steel trim for durability.
* Maximum temperature limitation may vary according to body and construction materials.
Please refer to the product Bulletin or local Sales Office for further information.
16
NPS 1, 1-1/2, 2, 2-1/2, 3, and 4 /
DN 25, 40, 50, 65, 80, and 100
2 to 250 psig /
0.14 to 17.2 bar
300 psig / 20.7 bar
Relief/Backpressure
Type 63EG-98HM
Body Size
Relief Pressure Range 15 to 375 psig / 1.0 to 25.9 bar
Maximum Inlet
Pressure
Maximum Capacity 4900 gpm / 18,547 l/min
Operation Method Pilot-Operated
Body Material
Bulletin No. 71.4: 63EG-98HM
The Type 63EG-98HM is a compact, fast response, high accuracy relief valve/backpressure
which is suitable for gas or liquid service. The valve's design makes it ideal for pump
recirculation especially in skid packages where space is limited. Available constructions
include units suitable for sea water applications.
NPS 2, 3, 4, 6, and 8 × 6 / DN 50,
80, 100, 150 and 200 x 150
450 psig / 31.0 bar
Steel, Stainless Steel, Hastelloy
C, Monel®, and Alloy 20
®
Pressure Reducing
Relief/Backpressure
MR95 Series
Body Size
Outlet Pressure
Maximum Inlet
Pressure
Maximum Capacity 397 gpm / 1500 l/min
Operation Method Direct-Operated
Body Material
Bulletin No. 71.1:MR95
The MR95 Series is a versatile, compact, high-capacity direct-operated regulator capable
of solving the toughest pressure control applications. Typical applications include fuel oil
steam atomization, sea water, fire water systems, and boiler feed water. The regulator
is available with differential pressure control, high temperature, and high-pressure
optional constructions.
Pressure Reducing
NPS 1/4, 1/2, 3/4, 1, 1-1/2, and 2 /
DN 15, 20, 25, 40, and 50
2 to 400 psig / 0.14 to 27.6 bar
Range
1000 psig / 68.9 bar
Cast Iron, Steel, Stainless Steel,
®
Hastelloy
C, and Monel
®
Type LR125
Body Size
Outlet Pressure Range 15 to 150 psig / 1 to 10.3 bar
Maximum Inlet Pressure 300 psig / 20.7 bar
Maximum Capacity 2052 gpm / 7769 l/min
Operation Method Pilot-Operated
Body Material
Maximum Temp Capacity 250°F / 121°C*
Bulletin No. 71.2:LR125
The Type LR125 pilot-operated, pressure reducing regulator is designed for liquid industrial/
commercial applications. The Type LR125 provides smooth operation, tight shutoff and
long life, even in dirty service. Its internally actuated metal plug eliminates disadvantages
associated with boot-style regulators, and the specially engineered flow path deflects debris,
protecting the seat from damage and erosion. The Type LR125 is used in conjunction with
a Type 95H pilot and Type 112 restrictor. An internal inlet strainer prevents large particles
from entering the main valve, limiting damage to internal parts.
NPS 1, 2, 3, 4 /
DN 25, 50, 80, and 100
WCC Steel, CF8M or
CF3M Stainless Steel
MR98 Series
Body Size
Relief Pressure Range
Maximum Inlet
Pressure
Maximum Capacity 300 gpm / 1150 l/min
Operation Method Direct-Operated
Body Material
Bulletin No. 71.4:MR98
The MR98 Series is used in a variety of liquid relief/backpressure applications, such as
pump recirculation, lube oil skids, heating and cooling systems, and process system. The
unit is available with a remote control line, differential pressure control and high-pressure
optional constructions.
Relief/Backpressure
NPS 1/4, 1/2, 3/4, 1, 1-1/2, and 2 /
DN 15, 20, 25, 40, and 50
2 to 375 psig /
0.14 to 25.9 bar
400 psig / 27.6 bar
Cast Iron, Steel, Stainless Steel,
Hastelloy
®
C, and Monel
®
Type LR128
Body Size
Outlet Pressure Range 35 to 375 psig / 2.4 to 25.9 bar
Maximum Inlet Pressure 450 psig / 31.0 bar
Maximum Capacity 3368 gpm / 12,748 l/min
Operation Method Pilot-Operated
Body Material
Maximum Temp Capacity 250°F / 121°C*
Bulletin No. 71.2:LR128
The Type LR128 pilot-operated, relief/backpressure regulator is designed for liquid industrial/
commercial applications. The Type LR128 provides smooth operation, tight shutoff and
long life, even in dirty service. Its internally actuated metal plug eliminates disadvantages
associated with boot-style regulators, and the specially engineered flow path deflects debris,
protecting the seat from damage and erosion. The Type LR128 is used in conjunction with
a Type 95HM pilot and Type 112 restrictor. An internal inlet strainer prevents large particles
from entering the main valve, limiting damage to internal parts.
NPS 1, 2, 3, and 4 /
DN 25, 50, 80, and 100
WCC Steel, CF8M or CF3M
Stainless Steel
Pressure Reducing
Type 1098-EGR
Body Size
Outlet Pressure
Maximum Inlet
Pressure
Maximum Capacity 11,934 gpm / 45,170 l/min
Operation Method Pilot-Operated
Body Material Cast Iron, Steel, Stainless Steel
Bulletin No. 71.2:1098-EGR
The Type 1098 regulators are capable of providing accurate, fast response, and
high-capacities in low-pressure drop systems. Typical applications include: inert gas and
plant air headers.
* Maximum temperature limitation may vary according to body and construction materials.
Please refer to the product Bulletin or local Sales Office for further information.
NPS 1, 2, 3, 4, 6, 8 x 6, and 12 x 6 /
DN 25, 50, 80, 100, 150, 200 x
150, and 300 x 150
4 inches w.c. to 300 psig /
Range
10 mbar to 20.7 bar
400 psig / 27.6 bar
Pressure Reducing
Type 75A
Body Size
Outlet Pressure Range
Maximum Inlet Pressure 200 psig / 13.8 bar
Maximum Capacity 260 gpm / 984 l/min
Operation Method Direct-Operated
Body Material Bronze
Maximum Temp Capacity 150°F / 66°C*
Bulletin No. 71.1:75A
The 75A regulator is designed to reduce domestic or industrial water pressure, thus
protecting plumbing fixtures and meters from high pressure surges. Type 75A is selfcontained, requiring no external control line for operation. Downstream pressure is
directly registered under the diaphragm. As the downstream pressure increases, the
diaphragm force overcomes the spring compression, causes the valve disk to rise, and
reduces flow through the regulator.
NPS 1/2, 3/4, 1, 1-1/2, 2, and
2-1/2 / DN 15, 20, 25, 40, 50,
and 65
20 to 80 psig /
1.4 to 5.5 bar
17
Process Gas
• Fully Balanced System
• High-Capacity
• High Sensitivity
• Tight Shutoff
• Low Setpoints
• In-line Maintenance
• Broad Material Selection
Gases are used in chemical and industrial
processes, such as analytical instrumentation,
environmental compliance, electronic
manufacturing, chemical production,
reference gases, and medical uses. All the
devices in these systems must be compatible
to prevent complications, such as corrosion,
unwanted chemical reactions, ignition, or
explosion. Also, some of these process systems
operate at very high or very low temperatures.
Regulators must be constructed to withstand
these temperatures.
The regulators and relief/backpressure
regulators covered in this section are available
in materials that are chemically compatible
with most process gases. The products shown
Pressure Reducing
Type 1098-EGR
Body Size
Outlet Pressure
Maximum Inlet
Pressure
Maximum Capacity
Operation Method Pilot-Operated
Body Material Cast Iron, Steel, Stainless Steel
Bulletin No. 71.2:1098-EGR
The Type 1098 regulators are capable of providing accurate, fast response, and
high-capacities in low-pressure drop systems. Typical applications include: inert gas and
plant air headers.
Pressure Reducing
NPS 1, 2, 3, 4, 6, 8 x 6, and 12 x 6 /
DN 25, 50, 80, 100, 150,
200 x 150, 300 x150
4 inches w.c. to 300 psig /
Range
10 mbar to 20.7 bar
400 psig / 27.6 bar
11,331,000 SCFH /
303,671 Nm
3
/h
MR95 Series
Body Size
Outlet Pressure Range 2 to 400 psig / 0.14 to 27.6 bar
Maximum Inlet
Pressure
Maximum Capacity 510,000 SCFH / 13,668 Nm
Operation Method Direct-Operated
Body Material
Bulletin No. 71.1: MR95
The MR95 Series is a versatile, compact, high-capacity direct-operated regulator capable
of solving the toughest pressure control applications. Possible applications include
oxygen systems, inert gas systems, and corrosive gas service. The regulator is available
with cryogenic materials, differential pressure control, high temperature, and highpressure optional constructions.
NPS 1/4, 1/2, 3/4, 1, 1-1/2, and 2 /
DN 15, 20, 25, 40, and 50
1000 psig / 68.9 bar
3
/h
Cast Iron, Steel, Stainless Steel,
Hastelloy
®
C, and Monel
®
in the Air, Liquids, and Sanitary sections may
also be used in your system if the materials
are compatible.
18
Relief/Backpressure
Relief/Backpressure
MR98 Series
Body Size
Relief Pressure Range
Maximum Inlet
Pressure
Maximum Capacity 206,000 SCFH / 5510 Nm
Operation Method Direct-Operated
Body Material
Bulletin No. 71.4:MR98
The MR98 Series is used in a variety of process gas backpressure and relief applications
including corrosive gases and cryogenic applications. The unit is available with a remote
control line, differential pressure control and high-pressure optional constructions.
Pressure Reducing
NPS 1/4, 1/2, 3/4, 1, 1-1/2, and 2 /
DN 15, 20, 25, 40, and 50
2 to 375 psig /
0.14 to 25.9 bar
400 psig / 27.6 bar
3
/h
Cast Iron, Steel, Stainless Steel,
Hastelloy
®
C, and Monel
®
T205 Series
Body Size
Control Pressure Range
Maximum Inlet Pressure 200 psig / 13.8 bar
Maximum Capacity
Operation Method Direct-Operated
Body Material
Bulletin No. 71.1:T205
The T205 Series is a compact regulator idea for accurate control of low-pressure systems.
The unit is easy to install and maintain. For larger applications the Type Y692 is available in
NPS 1-1/2 and 2 / DN 40 and 50 sizes.
NPS 3/4 and 1 /
DN 20 and 25
1-inch w.c. to 7 psig /
2 mbar to 0.48 bar
2468 SCFH /
346.2 Nm
Cast Iron, Steel, and
Stainless Steel
3
/h
T208 Series
Body Size
Control Pressure Range
Maximum Inlet Pressure 75 psig / 5.2 bar
Maximum Capacity 2286 SCFH / 61.3 Nm
Operation Method Direct-Operated
Body Material
Bulletin No. 74.2:T208
The T208 Series is ideal for relief or backpressure applications in small systems. The unit
may also be utilized as a vapor recovery valve. A larger NPS 1-1/2 and 2 / DN 40 and 50
unit is available in the Type Y696.
Vacuum Breaker
NPS 3/4 and 1 /
DN 20 and 25
2-inches w.c. to 7 psig /
5 mbar to 0.48 bar
3
Cast Iron, Steel, and
Stainless Steel
/h
T205VB Series
Body Size
Control Pressure Range
Maximum Inlet Pressure 200 psig / 13.8 bar
Maximum Capacity 2468 SCFH / 66.1 Nm
Operation Method Direct-Operated
Body Material
Bulletin No. 71.3:T205VB
The T205VB Series vacuum breaker provides accurate vacuum protection with its large
diaphragm area. An external registration option is available for systems requiring a control
line. The Y692VB Series is available for larger systems needing a NPS 1-1/2 or 2 / DN 40 or
50 unit. For Vacuum Regulator applications, the T208VR and Y696VR Series are available.
NPS 3/4 and 1 /
DN 20 and 25
0 to 5 psig /
0 to 0.35 bar vacuum
Cast Iron, Steel, and
Stainless Steel
3
/h
19
Fuel Gas
• High speed response
• High-Capacity
• Flexibility
• Control Accuracy
• Easy Maintenance
• Safe Operation
Natural gas (methane) is a clean-burning fuel
gas used for many residential, commercial, and
industrial applications. This colorless, naturally
occurring gas can be found in many countries
around the world.
For industrial applications, natural gas is used
as a feedstock for making chemicals, such as
anhydrous ammonia, and as a fuel for boilers
and furnaces.
Pressure Reducing
Type 310A
Body Size
Outlet Pressure
Maximum Inlet
Pressure
Maximum Capacity
Operation Method Pilot-Operated
Body Material WCC Steel
Bulletin No. 71.2:310A
The Type 310A pilot-operated high-pressure regulator is used where high-capacity , fast
response, and accurate control are essential. Typical applications include turbine startup
and power plant fuel supply.
Pressure Reducing
NPS 1, 2, 3, 4, and 4 x 6 /
DN 25, 50, 80, 100, and
100 x 150
10 to 700 psig /
Range
0.69 to 48.3 bar
1500 psig / 103 bar
21,170,000 SCFH /
567,356 Nm
3
/h
Type EZR
NPS 1, 1-1/4 x 1, 2 x 1, 2, 3,
Body Size
Outlet Pressure
Maximum Inlet
Pressure
Maximum Capacity
Operation Method Pilot-Operated
Body Material
Bulletin No. 71.2:EZR
4, 6, and 8 / DN 25, 32 x 25,
50 x 25, 50, 80, 100, 150,
and 200
6-inches w.c. to 1000 psig /
Range
15 mbar to 69.0 bar
1500 psig / 103 bar
26,138,000 SCFH /
700,498 Nm
Cast Iron and WCC or
LCC Steel
3
/h
20
The Type EZR pilot-operated, pressure reducing regulator is designed for natural gas
transmission/distribution systems and industrial/commercial applications. The Type EZR
provides smooth, quiet operation, and tight shutoff.
Pressure Reducing
Y600A Series
Body Size
Outlet Pressure Range
Maximum Inlet
Pressure
Maximum Capacity
Operation Method Direct-Operated
Body Material Cast Iron
Bulletin No. 71.1:Y600A
Y600A Series direct-operated, spring-loaded regulators provide economical pressurereducing control for a variety of residential, commercial, and industrial applications.
The large diaphragm area provides more accurate control at low-pressure settings.
The pitot tube of regulators also creates a dynamic boost that helps provide
greater capacity.
NPS 3/4 and 1 /
DN 20 and 1
4-inches w.c. to 7 psig /
10 mbar to 0.48 bar
150 psig / 10.3 bar
6660 SCFH /
3
/h of Natural Gas
178 Nm
Pressure Reducing
Pressure Reducing
Type 1098-EGR
Body Size
Outlet Pressure Range
Maximum Inlet Pressure 400 psig / 27.6 bar
Maximum Capacity
Operation Method Pilot-Operated
Body Material Cast Iron, Steel, Stainless Steel
Bulletin No. 71.2:1098-EGR
The Type 1098 regulators are capable of providing accurate, fast response and
high-capacities in low-pressure drop systems. Typical applications include: natural gas
distribution systems; fuel gas supply to industrial boilers, furnaces, ovens, and mixers; and
large commercial/industrial establishments.
Pressure Reducing
NPS 1, 2, 3, 4, 6, 8 x 6, and 12 x 6 /
DN 25, 50, 80, 100, 150, 200 x
150, and 300 x 150
4 inches w.c. to 300 psig /
10 mbar to 20.7 bar
11,331,000 SCFH /
303,671 Nm
3
/h
EZH and EZHSO Series
Body Size
Outlet Pressure Range
Maximum Inlet Pressure 1500 psig / 103 bar
Maximum Capacity
Operation Method Pilot-Operated
Body Material Steel
Bulletin No. 71.2:EZH and EZHSO
The EZH and EZHSO Series regulators are accurate pilot-operated, pressure balanced, and
soft seated regulators. They are designed for use in large capacity distribution systems
and power plant feeds. They provide smooth, reliable operation, tight shutoff, and
long life.
NPS 1, 2, 3, and 4 /
DN 25, 50, 80, and 100
14.5 to 1160 psig /
1 to 80.0 bar
13,833,000 SCFH /
370,724 Nm
3
/h
Type 99
Body Size NPS 2 / DN 50
Outlet Pressure
Maximum Inlet
Pressure
Maximum Capacity 265,000 SCFH / 7102 Nm
Operation Method Pilot-Operated
Body Material Cast Iron and Steel
Bulletin No. 71.2:99
The Type 99 regulator is ideal for systems requiring accurate pressure control and fast
response. Typical applications include fuel supply to industrial boiler, gas engines,
furnaces, ovens, industrial burners, and dryers.
2-inches w.c. to 100 psig /
Range
5 mbar to 6.9 bar
1000 psig / 69.0 bar
Pressure Reducing
133 Series
Body Size NPS 2 / DN 50
Outlet Pressure
Maximum Inlet
Pressure
Maximum Capacity 170,000 SCFH / 4556 Nm
Operation Method Direct-Operated
Body Material Cast Iron and Steel
Bulletin No. 71.1:133
The 133 Series is a high-capacity regulator with fast response ideal for snap-acting boiler
applications. The nit’s balanced trim design enables the regulator to provide accurate
control of gas pressure for maximum combustion efficiency despite varying inlet
pressure conditions.
2-inches w.c. to 60 psig /
Range
5 mbar to 4.1 bar
150 psig / 10.3 bar
3
/h
3
/h
21
Regulator Tips
All regulators should be installed and used in accordance with federal, state, and local codes and regulations.
PRESSURE
• Adequate overpressure protection should be installed
to protect the regulator from overpressure. Adequate
overpressure protection should also be installed to
protect all downstream equipment in the event of
regulator failure.
• Downstream pressures significantly higher than the
regulator’s pressure setting may damage soft seats and
other internal parts.
• When a regulator appears unable to pass the published
flow rate, be sure to check the inlet pressure measured
at the regulator body inlet connection. Piping up to
and away from regulators can cause significant flowing
pressure losses.
• When adjusting setpoint, the regulator should be flowing
at least five percent of the normal operating flow.
• Droop is the reduction of outlet pressure experienced by
pressure reducing regulators as the flow rate increases. It
is stated as a percent, in inches of water column (mbar)
or in pounds per square inch (bar) and indicates the
difference between the outlet pressure setting made
at low flow rates and the actual outlet pressure at the
published maximum flow rate. Droop is also called offset
or proportional band.
• Downstream pressure always changes to some extent
when inlet pressure changes.
• A disk with a cookie cut appearance probably means you
had an overpressure situation. Thus, investigate further.
SPEED OF RESPONSE AND ACCURACY
• If two or more available springs have published pressure
ranges that include the desired pressure setting, use the
spring with the lower range for better accuracy.
• Direct-operated regulators generally have faster response
to quick flow changes than pilot-operated regulators.
• Speed of regulator response, in order:
- Direct-operated
- Two-path pilot-operated
- Unloading pilot-operated
- Control valve
Note: Although direct-operated regulators give the fastest
response, all types provide quick response.
• The full advertised range of a spring can be utilized
without sacrificing performance or spring life.
SIZING
• The recommended selection for orifice diameters is the
smallest orifice that will handle the flow.
• Regulator body size should never be larger than the pipe
size. In many cases, the regulator body is one size smaller
than the pipe size.
• Do not oversize regulators. Pick the smallest orifice
size or regulator that will work. Keep in mind when
sizing a station that most restricted trims that do not
reduce the main port size do not help with improved low
flow control.
• Most soft-seated regulators will maintain the pressure
within reasonable limits down to zero flow. Therefore,
a regulator sized for a high flow rate will usually have
a turndown ratio sufficient to handle pilot-light loads
during off cycles.
• Do not undersize the monitor set. It is important to realize
that the monitor regulator, even though it is wide-open,
will require pressure drop for flow. Using two identical
regulators in a monitor set will yield approximately
70 percent of the capacity of a single regulator.
TEMPERATURE
• Most regulators shown in this handbook are generally
suitable for temperatures to 180°F / 82°C. With high
temperature Fluorocarbon (FKM) (if available), the
regulators can be used for temperatures to 300°F /
149°C. Check the temperature capabilities to determine
materials and temperature ranges available. Use stainless
steel diaphragms and seats for higher temperatures, such
as steam service.
• For every 15 psid / 1.0 bar, differential pressure differential
across the regulator, expect approximately one degree
drop in gas temperature due to the natural refrigeration
effect. Freezing is often a problem when the ambient
temperature is between 30°F / -1°C and 45°F / 7°C.
22
Regulator Tips (continued)
INSTALLATION
• Diaphragms leak a small amount due to migration of gas
through the diaphragm material. To allow escape of this
gas, be sure casing vents (where provided) remain open.
• Use control lines of equal or greater size than the control
tap on the regulator. If a long control line is required,
make it bigger. A rule of thumb is to use the next
nominal pipe size for every 20 feet / 6.1 meters of control
line. Small control lines cause a delayed response of
the regulator, leading to increased chance of instability.
3/8-inch OD tubing is the minimum recommended
control line size.
• When using relief valves, be sure to remember that the
reseat point is lower than the start-to-bubble point. To
avoid seepage, keep the relief valve setpoint far enough
above the regulator setpoint.
For more Regulator Tips, turn to page 664 of the Industrial Application Guide Edition VI or log-on to www.fisherregulators.com
• Vents should be pointed down to help avoid the
accumulation of water condensation or other materials
in the spring case.
• Make control line connections in a straight run of pipe
about 10 pipe diameters downstream of any area of
turbulence, such as elbows, pipe swages, or block valves.
• When installing a working monitor station, get as much
volume between the two regulators as possible. This
will give the upstream regulator more room to control
intermediate pressure.
Emerson's sales, service and technical support are close at hand. Anywhere in the world, Emerson resources are
available by telephone or on our website. Our distribution network includes an experienced sales and support team,
with more than 2,000 technical experts available from nearly 200 offices throughout the world.
www.fisherregulators.com
23
Industrial Regulators
Natural Gas Technologies
LP-Gas Equipment
TESCOM
Emerson Process Management
Regulator Technologies, Inc.
North America
3200 Emerson Way
McKinney, Texas 75070 USA
Tel: +1 800 558 5853
Outside U.S. +1 972 548 3574
Asia-Pacific
Shanghai 201206, China
Tel: +86 21 2892 9000
Europe
Bologna 40013, Italy
Tel: +39 051 419 0611
Middle East and Africa
Dubai, United Arab Emirates
Emerson Process Management
Regulator Technologies, Inc.
North America
3200 Emerson Way
McKinney, Texas 75070 USA
Tel: +1 800 558 5853
Outside U.S. +1 972 548 3574
Asia-Pacific
Singapore 128461, Singapore
Tel: +65 6770 8337
Europe
Bologna 40013, Italy
Tel: +39 051 419 0611
Chartres 28008, France
Tel: +33 2 37 33 47 00
Tel: +011 971 4811 8100
For further information visit www.fisherregulators.com
Our Global Product Brand:
Emerson Process Management
Regulator Technologies, Inc.
North America
3200 Emerson Way
McKinney, Texas 75070 USA
Tel: +1 800 558 5853
Outside U.S. +1 972 548 3574
Asia-Pacific
Singapore 128461, Singapore
Tel: +65 6770 8337
Europe
Chartres 28008, France
Tel: +33 2 37 33 47 00
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Tel: +11 52 55 2699 0400
Emerson Process Management
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+1 800 447 1250
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Tel: +86 21 2892 9000
D351342X012 © 2013 Emerson Process Management Regulator Technologies, Inc. All rights reserved. Printed in China. 11/13.
Fisher, Emerson Process Management, and the Emerson Process Management design are marks of one of the Emerson Process
Management group of companies. All other marks are the property of their respective owners.
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