Emerson Fisher MR95 Series User manual

MR95 Series - AD2000 Compliant
Instruction Manual
D104606X012
October 2021
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TYPE MR95H WITH
FLANGE END CONNECTION
TYPE MR95H
PRESSURE REDUCING REGULATORS
Figure 1. Typical MR95 Series Pressure Regulators
MR95 Series Pressure Regulators
AD2000 Compliant

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Specications
This section lists the specications for the MR95 Series regulators. Factory specication such as type, maximum inlet
pressure, maximum temperature, maximum outlet pressure, spring range, orice size and seat material are stamped
on the nameplate fastened on the regulator at the factory.
Available Constructions
Type MR95H: Pressure reducing regulator for outlet
pressures from 0.34 to 10.3 bar / 5 to 150 psig.
Type MR95HP: Pressure reducing regulator for
outlet pressures from 1.0 to 27.6 bar / 15 to 400 psig
(soft-seated)
Type MR95HT: High temperature pressure reducing
regulator for outlet pressures from 1.0 to 20.7 bar /
15 to 300 psig (metal seat) and up to 343°C / 650°F
Body and Orice Sizes
DN 15 / 1/2 in. Body: 10.56 mm / 0.416 in. orice
DN 20 and 25 / 3/4 and 1 in. Body Sizes:
16.02 mm / 0.631 in. orice
DN 40 and 50 / 1-1/2 and 2 in. Body Sizes
(not available for Types MR95L and MR95LD):
29 mm / 1.142 in. orice
End Connection Styles
See Table 1
Outlet Pressure Ranges(1)
See Table 2
Maximum Cold Working Pressures of Body Size
and Materials(1)
See Table 3
Pressure Registration
Internal or External
Shuto󰀨 Classication Per ANSI/FCI 70-3-2004
Metal Seats: Class IV
Elastomer Seats: Class VI or better
PTFE: Class IV
Maximum Temperature Ranges of Diaphragm,
Trim, Seat and Body Materials(1)(2)
See Table 4
Flow and Sizing Coe󰀩cients
See Table 5
Relief Sizing Coe󰀩cients for MR95 Series
Regulators with Reduced Flow Orices
See Table 6
API 614 Compliant
Stainless steel constructions with Stainless steel
trim meets API 614 Requirements
Sour Gas Service Capability
These constructions comply with the
recommendations of NACE International
Standards MR0175-2002, MR0103, and/or ANSI/
NACE MR0175/ISO 15156.
Pressure Setting Adjustment
Adjusting screw: Standard for Types MR95H,
MR95HP and MR95HT
Approximate Weights
MR95H Series:
DN 15 / 1/2 in. body: 4.5 kg / 10 lbs
DN 20 and 25 / 3/4 and 1 in. Body Sizes:
10 kg / 22 lbs
DN 40 and 50 / 1-1/2 and 2 in. Body Sizes:
25 kg / 55 lbs
1. The pressure/temperature limits in this Instruction Manual and any applicable standard or code limitation should not be exceeded.
2. Pressure and/or the body end connection may decrease these maximum temperatures.

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Table 1. Types MR95H, MR95HT and MR95HP Regulators Body Constructions
BODY SIZE BODY CONSTRUCTION END CONNECTION BODY MATERIAL
1.4408 Stainless Steel(1)
DN 15 / 1/2 in.
Without Control Line and Gauge Port
G Thread
SWE
Welded CL150 RF
Welded CL300 RF
Welded CL600 RF
Welded PN 16/25/40 RF
Integral CL150 RF
Integral CL300 RF
Integral CL600 RF
Integral PN 16/25/40 RF
With Control Line but Without Gauge Port
G Thread
Welded CL150 RF
Welded CL300 RF
Welded CL600 RF
Welded PN 16/25/60 RF
DN 20 / 3/4 in.
Without Gauge Port and Control Line
G Thread
SWE
Welded CL150 RF
Welded CL300 RF
Welded CL600 RF
Welded PN 16/25/40 RF
With Control Line but Without Gauge Port
G Thread
Welded CL150 RF
Welded CL300 RF
Welded PN 16/25/60 RF
With Gauge Port but Without Control Line
G Thread
Welded CL150 RF
Welded CL300 RF
Welded PN 16/25/60 RF
DN 25 / 1 in.
Without Gauge Port and Without Control Line
G Thread
SWE
Welded CL150 RF
Welded CL300 RF
Welded CL600 RF
Welded PN 16/25/40 RF
Integral CL150 RF
Integral CL300 RF
Integral CL600 RF
Integral PN 16/25/40 RF
With Control Line but Without Gauge Port
G Thread
Welded CL150 RF
Welded CL300 RF
Welded PN 16/25/40 RF
With Gauge Port but Without Control Line
G Thread
Welded CL150 RF
Welded CL300 RF
Welded PN 16/25/40 RF
DN 40 / 1-1/2 in.
Without Gauge Port and Control Line
G Thread
SWE
Welded CL150 RF
Welded CL300 RF
Welded CL600 RF
Welded PN 16/25/40 RF
With Control line but Without Gauge Port
G Thread
Welded CL150 RF
Welded CL300 RF
Welded PN 16/25/40 RF
With Gauge Port but Without Control Line
G Thread
Welded CL150 RF
Welded CL300 RF
Welded PN 16/25/40 RF
- Shaded areas indicate that the construction is available.
- Blank areas indicate that you need to contact your local Sales O󰀩ce for the availability of the constructions.
1. Meets the chemical and physical requirements of NACE MR0175-2002, NACE MR0103 and NACE MR0175/ISO 15156.
- continued -

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Table 1. Types MR95H, MR95HT and MR95HP Regulators Body Constructions (continued)
BODY SIZE BODY CONSTRUCTION END CONNECTION BODY MATERIAL
1.4408 Stainless Steel(1)
DN 50 / 2 in.
Without Gauge Port and Control Line
G Thread
SWE
Welded CL150 RF
Welded CL300 RF
Welded CL600 RF
Welded PN 16/25/40 RF
Integral CL150 RF
Integral CL300 RF
Integral CL600 RF
Integral PN 16/25/40 RF
With Control Line but Without Gauge Port
G Thread
Welded CL150 RF
Welded CL300 RF
Welded PN 16/25/40 RF
With Gauge Port but Without Control Line
G Thread
Welded CL150 RF
Welded CL300 RF
Welded PN 16/25/40 RF
- Shaded areas indicate that the construction is available.
- Blank areas indicate that you need to contact your local Sales O󰀩ce for the availability of the constructions.
1. Meets the chemical and physical requirements of NACE MR0175-2002, NACE MR0103 and NACE MR0175/ISO 15156.
Table 2. MR95 Series Outlet Pressure Ranges and Spring Information
TYPE
BODY SIZE OUTLET
PRESSURE RANGE
SPRING
WIRE DIAMETER
SPRING
FREE LENGTH SPRING MATERIAL(1) SPRING
PART NUMBER
SPRING
COLOR
DN In. bar psi/psig mm In. mm In.
MR95H
15 1/2
1.0 to 2.1 15 to 30 5.26 0.207 63.5 2.50 Powder-coated steel(2) ERCA04288A0 Yellow
1.7 to 5.2 25 to 75 5.94 0.234 65.9 2.60 Powder-coated steel(2) ERAA01910A0 Green
4.8 to 10.3 70 to 150 7.19 0.283 62.0 2.44 Powder-coated steel(2) ERAA01911A0 Red
20
and 25
3/4
and 1
1.0 to 2.1 15 to 30 7.77 0.306 102 4.00 Powder-coated steel(2) 1E398927022 Yellow
1.7 to 5.2 25 to 75 8.71 0.343 102 4.00 Powder-coated steel(2) 1E399027142 Green
4.8 to 10.3 70 to 150 10.31 0.406 102 4.00 Powder-coated steel(2) 1E399127162 Red
1.0 to 2.1 15 to 30 7.77 0.306 102 4.00 Powder-coated Stainless steel 1E3989X0052 Yellow
1.7 to 5.2 25 to 75 9.53 0.375 98.6 3.88 Stainless steel 1K762537022 Unpainted
4.8 to 10.3 70 to 150 11.1 0.437 102 4.00 Stainless steel 11A8269X012 Unpainted
40
and 50
1-1/2
and 2
0.34 to 5.5 5 to 80 12.7 0.500 165 6.50 Powder-coated steel ERCA04290A0 Black with Light Blue Stripe
4.1 to 8.3 60 to 120 14.3 0.562 167 6.56 Powder-coated steel ERAA01893A0 Light Gray
6.9 to 9.7 100 to 140 15.1 0.594 167 6.56 Enamel-coated steel ERAA01894A0 Yellow
8.3 to 10.3 120 to 150 15.9 0.625 167 6.57 Powder-coated steel 1P7888X0022 Black
0.34 to 4.1 5 to 60 12.7 0.5 165 6.5 Inconel®ERAA09035A0 Unpainted
3.4 to 8.3 50 to 120 15.9 0.625 165 6.5 Inconel®ERAA08881A0 Unpainted
MR95HT
15 1/2
1.0 to 6.9 15 to 100 7.14 0.281 63.5 2.50 Inconel®ERCA04294A0 Unpainted
5.5 to 20.7 80 to 300 9.53 0.375 66.0 2.60 Inconel®ERCA04293A0 Unpainted
20
and 25
3/4
and 1
1.0 to 6.9 15 to 100 11.1 0.437 104 4.08 17-4 PH Stainless steel ERCA04295A0 Unpainted
5.5 to 10.3 80 to 150 14.3 0.562 104 4.08 17-4 PH Stainless steel ERCA04296A0 Unpainted
40
and 50
1-1/2
and 2
1.0 to 6.9 15 to 100 15.9 0.625 170 6.70 17-4 PH Stainless steel ERCA04297A0 Unpainted
4.1 to 17.9 60 to 260 20.6 0.812 170 6.70 17-4 PH Stainless steel ERCA04298A0 Unpainted
MR95HP
15 1/2
1.0 to 6.9 15 to 100 7.14 0.281 63.5 2.50 Inconel®ERCA04294A0 Unpainted
5.5 to 27.6 80 to 400 9.53 0.375 66.0 2.60 Inconel®ERCA04293A0 Unpainted
20
and 25
3/4
and 1
1.0 to 6.9 15 to 100 11.1 0.437 104 4.08 17-4 PH Stainless steel ERCA04295A0 Unpainted
5.5 to 27.6 80 to 400 14.3 0.562 104 4.08 17-4 PH Stainless steel ERCA04296A0 Unpainted
40
and 50
1-1/2
and 2
1.0 to 6.9 15 to 100 15.9 0.625 170 6.70 17-4 PH Stainless steel ERCA04297A0 Unpainted
4.1 to 20.7 60 to 300 20.6 0.812 170 6.70 17-4 PH Stainless steel ERCA04298A0 Unpainted
1. Springs meet NACE MR0175-2002, NACE MR0103 and NACE MR0175/ISO 15156 requirements only for applications in which the spring is not exposed to the sour gas.
2. Available in Inconel®.
Inconel® is a mark owned by Special Metals Corporation.

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Table 3. Maximum Cold Working Pressures of Body Size and Material(1)(2) – According to ASME B & PVC, UG 101 (k):
TYPE BODY SIZE END
CONNECTION BODY MATERIAL
MAXIMUM
INLET PRESSURE
MAXIMUM
OUTLET PRESSURE
MAXIMUM
SPRING CASE PRESSURE
bar psig bar psig bar psig
MR95H All available sizes(3) All 1.4408 Stainless steel 37.2 539 37.2 539 37.2 539
MR95HP
DN 15, 40 and 50 /
1/2, 1-1/2 and 2 in. G Thread
1.4408 Stainless steel
96.6 1400
53.1 770 53.1 770
DN 20 and 25
3/4 and 1 in. 41.8 606 41.8 606
DN15, 40 and 50 /
1/2, 1-1/2 and 2 in. PN 47.8 693
47.8 693 47.8 693
20 and 25 /
3/4 and 1 in. 42.6 618 42.6 618
MR95HT
DN 15 / 1/2 in. G Thread
1.4408 Stainless steel
83.3 1207 76.2 1105 76.2 1105
PN 56.1 814 56.1 814 56.1 814
DN 20 and 25 /
3/4 and 1 in.
G Thread 83.3 1207 42.0 610 42.0 610
PN 56.1 814 43.0 624 43.0 624
DN 40 and 50 /
1-1/2 and 2 in.
G Thread 83.3 1207 62.3 904 62.3 904
PN 56.1 814 56.1 814 56.1 814
1. The pressure/temperature limits in this Bulletin and any applicable standard or code limitation should not be exceeded.
2. The pressure limits given are based on the body size and body materials only. Actual pressure limits of the assembled regulator may decrease and vary depending on the temperature, body
end connection, diaphragm, seat and/or trim material of the regulator.
3. See Tables 1 and 2 for all available body sizes.
Table 4. MR95 Series Temperature Capabilities(1)(2)
TRIM MATERIAL SEAT DIAPHRAGM O-RING DIAPHRAGM
PROTECTOR GASKET TEMPERATURE
°C °F
Nitrile (NBR)   -40 to 82 -40 to 180
Neoprene (CR) -40 to 82 -40 to 180
Fluorocarbon (FKM)(3)  -18 to 149,
Limited to 93°C for hot water
0 to 300,
Limited to 200°F for hot water
Ethylenepropylene (EPDM)  -7 to 135 20 to 275
Peruoroelastomer (FFKM)   -18 to 218 0 to 425
PTFE   -40 to 204 -40 to 400
Metal   -40 to 343 -40 to 650
Composition(5) -40 to 208, -40 to 406,
Graphite -40 to 343 -40 to 650
BODY MATERIAL TEMPERATURE
°C °F
1.4408 Stainless(4) -40 to 288 -40 to 550
1. The pressure/temperature limits in this Bulletin and any applicable standard limitation should not be exceeded.
2. The temperature limits given are based on the body size and body materials only. Actual temperature limits of the assembled regulator may decrease and vary depending on the body end
connection, diaphragm, seat and/or trim material of the regulator.
3. Not for use on steam service.
4. Meets API 614 requirements (with Stainless steel trim).
5. Temperature rating can be increased up to 232°C / 450°F but may require increased gasket maintenance.
Table 5. Flow and Sizing Coecients for all MR95 Series Regulators
BODY SIZE WIDE-OPEN COEFFICIENT
(FOR RELIEF SIZING) C1Km
IEC SIZING COEFFICIENT
DN In. CvCgCsXTFDFL
15 1/2 2.9 103 5.15 35.5 0.79 0.797 0.70 0.89
20 and 25 3/4 and 1 6.0 221 11.05 36.8 0.88 0.857 0.68 0.94
40 and 50 1-1/2 and 2 18.1 700 35.00 38.7 0.88 0.945 0.65 0.94
Km = FL2
Table 6. Relief Sizing Coecients for MR95 Series Regulators with Reduced Flow Orices(1)
BODY SIZE WIDE-OPEN COEFFICIENT FOR
MR95 SERIES REDUCED FLOW OPTION
WIDE-OPEN COEFFICIENT FOR LEGACY
95 SERIES
DN In. CgCg
15 1/2 70 67
20 and 25 3/4 and 1 156 156
40 and 50 1-1/2 and 2 482 475
1. The reduced ow orice option o󰀨ers similar ow capacity as the equivalent 95 Series conguration.

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▲ WARNING
Failure to follow these instructions or
to properly install and maintain this
equipment could result in an explosion,
re and/or chemical contamination
causing property damage and personal
injury or death.
Fisher™ regulators must be installed,
operated and maintained in accordance
with federal, state and local codes, rules
and regulations and Emerson Process
Management Regulator Technologies,
Inc. (Emerson) instructions.
If the regulator vents gas or a leak
develops in the system, service to
the unit may be required. Failure
to correct trouble could result in a
hazardous condition.
Installation, operation and maintenance
procedures performed by unqualied
personnel may result in improper
adjustment and unsafe operation. Either
condition may result in equipment
damage or personal injury. Only a
qualied person shall install or service
the MR95 Series regulator.
Introduction
Scope of the Manual
This manual provides instructions for the installation,
adjustment, maintenance and parts ordering for
MR95 Series pressure regulators. These regulators
are usually shipped separately for line or panel
mounting or installed on other equipment. Instructions
and parts lists for other equipment are found in
separate manuals.
Product Description
The MR95 Series pressure reducing and di󰀨erential
pressure regulators are suitable for multiple uid
mediums including liquid, gas, air and steam services.
Typical applications include use in but not limited to
wash tanks, small heaters, fuel and oil lines, air supply
systems, test xtures and sterilizers.
Types MR95H, MR95HP and MR95HT regulators
are direct-operated pressure reducing regulators for
pressure control requiring constant outlet pressures
between 0.34 and 27.6 bar / 5 to 400 psig.
See Tables 1 through 6 for detailed breakdown of the
various construction o󰀨erings. Typical MR95 Series
regulators are shown in Figure 1
Principle of Operation
Types MR95H, MR95HP and MR95HT (see Figure 2)
are direct-operated regulators and use spring force to
regulate outlet pressure.
Downstream pressure is registered either internally
through the body or externally through a control
line to the underside of the diaphragm. When the
downstream pressure is at or above the set pressure,
the disk is held against the orice and restricting
ow through the regulator. When demand increases,
downstream pressure drops slightly allowing the spring
to extend, moving the stem down and the disk away
from the orice. This allows uid ow through the body
to the downstream system.

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M1231_08/2013
M1231_08/2013
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Figure 2. MR95 Series Operational Schematics
ADJUSTING SCREW
CONTROL SPRING
DIAPHRAGM
PITOT TUBE
STEM
VALVE PLUG
CONTROL LINE TAP
FRONT AND INTERNAL VIEW OF
TYPE MR95H WITH INTERNAL
PRESSURE REGISTRATION
BACK VIEW OF
DN 15 / 1/2 IN. TYPE MR95H
WITH EXTERNAL
PRESSURE REGISTRATION
SIDE AND INTERNAL VIEW
OFDN 20 TO 50 / 3/4 TO 2 IN.
TYPE MR95H WITH EXTERNAL
PRESSURE REGISTRATION
SPRING METAL DIAPHRAGMS
TYPE MR95H WITH 2 METAL DIAPHRAGMS
(ALSO TYPICAL OF TYPE MR95HT)
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
GASKET

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Installation
▲ WARNING
Personal injury or system damage
may result if this regulator is installed,
without appropriate overpressure
protection, where service conditions
could exceed the limits given in the
Specications section and/or regulator
nameplate. Refer to Overpressure
Protection section for recommendations
on how to prevent service conditions
from exceeding those limits.
Additionally, physical damage to the
regulator may result in personal injury
or property damage due to escaping of
accumulated gas. To avoid such injury
and damage, install the regulator in a
safe location.
Under enclosed conditions or indoors,
escaping gas may accumulate and be an
explosion hazard. In this case, the vent
should be piped outdoors.
For regulator constructions with a
spring case vent, the vent should be
kept open to permit free ow of gas
to the atmosphere. Protect openings
against entrance of rain, snow, insects
or any other foreign material that may
plug the spring case vent or vent line.
All pressure equipment should be
installed in a non-seismic area;
should not be exposed to re; and
should be protected from thunderbolt
(lightning) strikes.
Before installing the regulator:
• Unpack the regulator and remove the protective
shipping plugs from the end connections of
the body and the pressure connection in the
spring case.
• Check the regulator and make sure it has not
been damaged or collected foreign material
during shipping.
• Remove any debris or dirt in the tubing and
the pipeline.
• Apply pipe compound to the external pipe thread
for NPT bodies or use appropriate gaskets for
anged bodies.
• Make sure gas ow through the regulator is in the
same direction as the arrow on the body.
On all sizes (DN 15 to 50 / 1/2 to 2 in.) Types MR95H,
MR95HP and MR95HT regulators, the spring case
vent is tapped so a vent line can be connected to
provide venting to a remote location.
Protect the exposed end of the vent pipe with
a weather and insect resistant vent assembly.
Periodically check all vents and remote vent lines to
ensure that they are unobstructed.
Overpressure Protection
▲ WARNING
Personal injury, equipment damage or
leakage due to escaping accumulated
gas or bursting of pressure-containing
parts may result if this regulator is:
• Over pressured
• Installed where service conditions could
exceed the limits given in the Specications
section and on the appropriate nameplate
• Where conditions exceed any ratings of
adjacent piping or piping connections
To avoid such injury or damage, provide
pressure-relieving or pressure-limiting
devices to prevent service conditions
from exceeding those limits.
BLOCK
VALVE
(INLET) VENT (OUTLET) VENT
TYPE MR95LD REGULATOR
(ALSO TYPICAL OF TYPES MR95HT AND MR95HP)
Figure 3. Installation Schematics

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The Type MR95H regulators have an outlet pressure
rating equal to the inlet pressure rating. Types
MR95HP and MR95HT regulators have an outlet
pressure rating lower than the inlet pressure rating.
The recommended pressure limitations are
stamped on the regulator nameplate. Some type of
overpressure protection is needed if the actual inlet
pressure exceeds the maximum operating outlet
pressure rating. Provide external overpressure
protection if the regulator inlet pressure is greater than
the safe working pressure of downstream equipment.
Common methods of external overpressure protection
include relief valves, monitoring regulators, shuto󰀨
devices and series regulation.
Regulator operation below the maximum pressure
limitations does not preclude the possibility of damage
from external sources or from debris in the pipeline. If
the regulator is exposed to an overpressure condition,
inspect it for any damage that may have occurred.
Startup
Note
The Specications section and
Tables 2 and 3 show the maximum
inlet and outlet pressures for specic
constructions. Use pressure gauges to
monitor inlet pressure, outlet pressure
and any loading pressure during startup.
1. Check that proper installation is completed
and downstream equipment has been
properly adjusted.
2. Make sure all block and vent valves are closed.
3. Decompress the control spring by turning the
adjusting screw counterclockwise.
4. Slowly open the valves in the following order:
a. Loading supply and control line valve(s), if used
b. Inlet block valve
c. Outlet block valve
5. Set the regulator to the desired outlet (control)
pressure according to the Adjustment procedure.
Adjustment
▲ WARNING
To avoid personal injury, property
damage or equipment damage caused
by bursting of pressure containing parts
or explosion of accumulated gas, never
adjust the control spring to produce an
outlet pressure higher than the upper
limit of the outlet pressure range for that
particular spring. If the desired outlet
pressure is not within the range of the
control spring, install a spring of the
proper range.
The factory setting of the regulator can be varied
within the pressure range stamped on the nameplate.
Follow the following procedures for the proper
adjustment of the outlet (control) spring. If the spring
range was changed, be sure to change the stamped
spring range on the nameplate.
All MR95 Series regulator springs can be backed o󰀨
to provide zero outlet. Recommended outlet pressure
ranges available, maximum inlet pressures and color
codes of the respective springs are shown in Tables 2
and 3.
Key numbers are referenced in Figure 6 or 7.
1. Loosen the jam nut (key 17).
2. Turn the adjusting screw (key 15) clockwise to
increase outlet pressure or counterclockwise to
decrease it.
3. Monitor the outlet pressure with a test gauge
during the adjustment.
4. Tighten the jam nut (key 17) to maintain the
desired setting.
Shutdown
1. Close the upstream block valve to the
regulator inlet.
2. Close the downstream block valve to the
regulator outlet.
3. Vent the downstream pressure by slowly opening
the bleed valve between the regulator and the
downstream shuto󰀨 valve. Without changing
regulator spring adjustment, all pressure between
the upstream and downstream shuto󰀨 valves will
be released through the bleed valve, since the
regulator opens in response to the decreased
outlet pressure.

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Maintenance
▲ WARNING
To avoid personal injury, property
damage or equipment damage caused
by sudden release of pressure or
explosion of accumulated gas, do
not attempt any maintenance or
disassembly without rst isolating the
regulator from system pressure and
relieving all internal pressure from
the regulator.
To avoid possible personal injury from
spring or pressure-loaded actuator,
make certain the adjusting screw is
completely backed o󰀨 and the spring
case pressure is vented prior to
disassembly. Otherwise, the spring load
or loading pressure could forcefully
eject the spring case.
Regulators that have been disassembled
for repair must be tested for proper
operation before being returned to
service. Only parts manufactured by
Emerson should be used for repairing
Fisher™ regulators.
Due to normal wear or damage that
may occur from external sources, this
regulator should be inspected and
maintained periodically. The frequency
of inspection and replacement of parts
depends upon the severity of service
conditions or the requirement of local,
state and federal rules and regulations.
Due to normal wear that may occur, inspect the
parts periodically and replace if necessary. The
frequency of inspection depends on the severity of
service conditions or the requirements of state and
federal laws.
Replace parts such as the O-rings, gaskets,
diaphragm and packing as necessary. Always
apply lubricants as the regulator is being
reassembled. Suitable lubricants are shown in the
assembly drawings.
The regulator does not have to be taken out of the
pipeline to be disassembled. All key numbers are
referenced in Figures 4 to 7.
Replacement or Maintenance of Orice
and Valve Plug
If it appears that the valve does not shut o󰀨 tightly, the
orice and valve plug could be worn out or damaged.
Proceed as follows to check and/or replace them.
1. Shut down the regulator. Refer to Shutdown
section for the proper procedure.
2. Unscrew the valve plug guide (key 5) from the
body (key 1). The valve plug spring (key 26) and
the valve plug (key 4) will normally come out of the
body along with the valve plug guide. On DN 40 or
50 / 1-1/2 or 2 in. body size regulators, the stem
(key 6) will also come out of the regulator body.
3. Inspect the seating surface of the valve plug
(key 4), make sure that the elastomer, PTFE or
polished metal surface of the valve plug is not
damaged. Also inspect the external O-ring (key 4c)
on the valve plug of Type MR95HP. Replace the
valve plug assembly if damage is noted.
4. Inspect the seating edge of the orice (key 3).
If damage is noted, unscrew the orice from
the body (key 1) and replace it with a new part.
Reference Table 8 for proper torque values.
5. Re-assemble the regulator in the reverse order of
the above steps. When installing the valve plug
guide (key 5), coat the threads and sealing surface
with sealant to ensure an adequate metal-to-metal
seal. Reference Table 8 for proper torque values.
Flange Cap Screw Torque Inspection
Retorquing of spring case cap screws may be
necessary for some MR95 Series regulators after a
period of use. Retorque the cap screws as follows:
1. Shut down the regulator. Refer to Shutdown
section for the proper procedure.
2. Retighten the cap screws (key 16) in a crisscross
pattern. See Table 8 for proper torque values.
3. Follow the Startup section to re-pressurize
the regulator.
4. Refer to the Replacement of Diaphragm section
as needed.

MR95 Series - AD2000 Compliant
11
D-A-CH Region Only
Replacement of Diaphragm
When the regulator does not respond to downstream
pressure changes, if uid leaks or vents to the spring
case, the diaphragm could be worn out or ruptured.
Inspect/replace the diaphragm as follows:
△ CAUTION
Metal diaphragms have thin sharp
edges. To avoid hand cuts, be careful
when handling the diaphragm and
particularly the diaphragm edge.
1. Shut down the regulator. Refer to “Shutdown”
section for the proper procedure.
2. Loosen the jam nut (key 17) and turn the adjusting
screw (key 15) counterclockwise to remove all
spring compression.
△ CAUTION
Provide adequate support to the
spring case when disassembling MR95
Series regulator installed in a vertical
installation or other application where
the spring case is not oriented upward.
Without adequate support, the spring
case may fall and cause physical injury
when the cap screws are loosened.
3. Remove the cap screws (key 16) from the
diaphragm casing. Lift the entire spring case
(key 2) o󰀨 of the body (key 1).
4. Remove the upper spring seat (key 9) and
regulator spring (key 11). For Types MR95H,
MR95HP and MR95HT with body sizes DN 40 and
50 / 1-1/2 and 2 in. skip steps 5 and 6.
5. For DN15 to DN 25 / 1/2 in. to 1 in. body sizes,
remove the lower spring seat (key 8).
6. Remove the diaphragm(s) (key 12) and examine
for damage. Replace if damage is noted. See
Table 7 for the required number of diaphragm(s).
Proceed to step 9.
7. For body sizes DN 40 and 50 / 1-1/2 and 2 in.,
remove the diaphragm and diaphragm head. The
diaphragm head can only be disassembled for the
DN 40 and 50 / 1-1/2 and 2 in. sizes. Disassemble
it for inspection of the diaphragm (key 12) and
two small diaphragm gaskets (key 29) or O-ring
(key 45). Remove the locknut (key 31) from the
pusher post (key 10) and separate the assembly.
An O-ring is used to seal around the pusher post if
an elastomer diaphragm is used and the gaskets
are used with stainless steel diaphragm(s).
8. Remove the stem assembly (key 6). Inspect the
O-ring (not shown) from wear or damage. Replace
stem assembly if damage is noted.
9. With diaphragm(s) (key 12) removed, ensure
the pressure registration hole (pitot tube, key 20,
in DN 20 / 3/4 in. and larger body sizes) is
completely open and free of all obstructions.
10. 10. If the unit has metal diaphragms
(see Figures 4 and 5):
a. (Applicable only for the lower diaphragm head
of Types MR95H, MR95HT, DN 40 and 50 /
1-1/2 and 2 in.) Find the pusher post (key 10)
and place on a surface with the larger at
surface down and the thread stem up (metal
diaphragm pusher post has a recessed
diameter in the bottom surface). Then, nd
one smaller composition gasket (key 29) and
t it over the threaded end of the pusher post.
Find and take one of the diaphragm heads and
slip it over the threaded end of the pusher post
with the chamfered side of the diaphragm head
toward the gasket. Take a second gasket and
place it over the threaded end of the pusher
post on top of the diaphragm head.
b. Replace one of the two large diaphragm
gaskets (key 19) on the surface of the body
(key 1) that will support the diaphragms
(key 12). There will be two diaphragms used
per regulator. Another diaphragm gasket will be
placed on top of the second metal diaphragm.
The raised surfaces of the metal diaphragms
should be placed in the unit so that they are
facing toward the assembler (toward the spring)
except only when one metal diaphragm is
being used then the raised surface should be
facing down (towards the body). See Figure 2
as reference.
11. Reassemble in the reverse of the above
procedures. Lubricate the upper spring seat
(key 9) and the exposed threads of the adjusting
screw (key 15) with anti-seize lubricant. Install the
cap screws (key 16) in a crisscross pattern and
tighten to nger tight only.
12. To ensure proper slack in the diaphragm, install
the adjusting screw (key 15), if completely
removed and turn it clockwise. This allows proper
positioning of the diaphragm (key 12) to permit full

MR95 Series - AD2000 Compliant
12
D-A-CH Region Only
DIAPHRAGM (KEY 12)
GASKET (KEY 19)
LOCKNUT (KEY 31)
LOCK WASHER (KEY 28)
LOWER SPRING SEAT (KEY 8)
DIAPHRAGM HEAD (KEY 21)
DIAPHRAGM(S) (KEY 12)
GASKET (KEY 45)
DIAPHRAGM HEAD (KEY 21)
PUSHER POST (KEY 10)
LOCKNUT (KEY 31)
LOCK WASHER (KEY 28)
LOWER SPRING SEAT (KEY 8)
DIAPHRAGM HEAD (KEY 21)
DIAPHRAGM(S) (KEY 12)
DIAPHRAGM HEAD (KEY 21)
GASKET (KEY 29)
GASKET (KEY 29)
PUSHER POST (KEY 10)
TYPE MR95H METAL DIAPHRAGM
COMPOSITION DIAPHRAGM METAL DIAPHRAGM
Figure 4. Diaphragm Assembly for MR95 Series with DN 15 to 25 / 1/2 to 1 in. Body Sizes
Figure 5. Diaphragm Assembly for MR95 Series with DN 40 and 50 / 1-1/2 and 2 in. Body Sizes
Table 7. Number of Diaphragms Required
BODY SIZE TYPE SPRING RANGE DIAPHRAGM MATERIAL NUMBER OF DIAPHRAGMS
DN 15 to 50 /
1/2 to 2 in. All Types All Ranges
Metal 2
Ethylene Propylene Diene (EPDM) 1
Fluorocarbon (FKM) 2
Neoprene (CR) 1
Table 8. Torque Specications
BODY SIZE SPRING CASE BOLT(1)(2) ORIFICE PLUG GUIDE
DN In. N•m Ft-Lb N•m Ft-Lb N•m Ft-Lb
15 1/2 13 to 18 10 to 13 46 to 51 34 to 38 102 to 122 75 to 90
20 and 25 3/4 and 1 33 to 41 24 to 30 68 to 81 50 to 60 136 to 169 100 to 125
40 and 50 1-1/2 and 2 54 to 68 40 to 50 244 to 271 180 to 200 230 to 271 170 to 200
1. Reduce spring case bolt’s torque by 30% when using Ethylene Propylene (EPDM) diaphragms.

MR95 Series - AD2000 Compliant
13
D-A-CH Region Only
travel of the valve plug (key 4). Finish tightening
the cap screws (key 16). See Table 8 for proper
torque values.
13. Complete reassembly procedures and turn the
adjusting screw (key 15) to produce the desired
outlet pressure. Tighten the jam nut (key 17) to
maintain the desired setting.
Parts Ordering
When corresponding with your local Sales O󰀩ce
about this equipment, always reference the equipment
serial number or FS number that can be found on
the nameplate.
When ordering replacement parts, reference the key
number of each needed part as found in the following
parts list. Separate kits containing all recommended
spare parts are available.
Note
In this parts list, parts marked NACE are
intended for corrosion-resistant service
as detailed in the NACE International
Standard MR0175-2002, MR0103, and/or
ANSI/NACE MR0175/ ISO 15156.
Parts List
Key Description Part Number
Parts Kit (included are keys 3, 4, 12, 19, 29, 45
and 63; not all parts are used for all types)
Type MR95H
Stainless steel diaphragm and plug
DN 15 / 1/2 in. Body RMR95HX0042
DN 20 and 25 / 3/4 and 1 in. Body sizes RMR95HX0072
DN 40 and 50 / 1-1/2 and 2 in. Body sizes RMR95HX0102
Neoprene (CR) diaphragm and
Nitrile (NBR)/Brass Disk
DN 15 / 1/2 in. Body RMR95HX0052
DN 20 and 25 / 3/4 and 1 in. Body sizes RMR95HX0082
DN 40 and 50 / 1-1/2 and 2 in. Body sizes RMR95HX0112
Neoprene (CR) diaphragm and
Nitrile (NBR)/416 Stainless steel Disk
DN 15 / 1/2 in. Body RMR95HX0062
DN 20 and 25 / 3/4 and 1 in. Body sizes RMR95HX0092
DN 40 and 50 / 1-1/2 and 2 in. Body sizes RMR95HX0122
Type MR95HT
Stainless steel diaphragm and plug
DN 15 / 1/2 in. Body RMR95HTX022
DN 20 and 25 / 3/4 and 1 in. Body sizes RMR95HTX032
DN 40 and 50 / 1-1/2 and 2 in. Body sizes RMR95HTX042
1 Body See Following Tables
2 Spring Case See Following Tables
3 Orice(2)
Metal-to-metal seat
Type MR95H
DN 15 / 1/2 in. Body size
416 Stainless steel GF04841X022
316 Stainless steel GF04841X032
Alloy 6 GF04841X062
DN 20 and 25 / 3/4 and 1 in. Body sizes
416 Stainless steel GF04821X022
316 Stainless steel GF04821X032
Alloy 6 GF04821X062
DN 40 and 50 / 1-1/2 and 2 in. Body sizes
416 Stainless steel GF04896X022
316 Stainless steel GF04896X032
Alloy 6 GF04896X062
Type MR95HT
DN 15 / 1/2 in. Body Size
416 Stainless steel GF04841X022
316 Stainless steel GF04841X032
Alloy 6 GF04841X062
DN 20 and 25 / 3/4 and 1 in. Body sizes
416 Stainless steel GF04821X022
316 Stainless steel GF04821X032
Alloy 6 GF04821X062
DN 40 and 50 / 1-1/2 and 2 in. Body sizes
416 Stainless steel GF04896X022
316 Stainless steel GF04896X032
Alloy 6 GF04896X062
Composition seat
Type MR95H
DN 15 / 1/2 in. Body Size
Brass, Oxygen Service GF05327X012
316 Stainless steel, NACE(1) GF05327X032
416 Stainless steel GF05327X022
DN 20 and 25 / 3/4 and 1 in. Body sizes
Brass, Oxygen Service GF04822X012
316 Stainless steel, NACE(1) GF04822X032
416 Stainless steel GF04822X022
DN 40 and 50 / 1-1/2 and 2 in. Body sizes
(Type MR95H only)
Brass, Oxygen Service GF05521X012
316 Stainless steel, NACE(1) GF05521X032
416 Stainless steel GF05521X022
Type MR95HP
DN 15 / 1/2 in. Body Size
316 Stainless steel, NACE(1) GF05327X032
416 Stainless steel GF05327X022
DN 20 and 25 / 3/4 and 1 in. Body sizes
316 Stainless steel, NACE(1) GF04822X032
416 Stainless steel GF04822X022
DN 40 and 50 / 1-1/2 and 2 in. Body sizes
316 Stainless steel, NACE(1) GF05521X032
416 Stainless steel GF05521X022
4* Valve plug, metal seat See Following Table
4* Disk holder assembly, composition seat See Following Table
4a Disk Holder - - - - - - - - - - -
4b Disk - - - - - - - - - - -
4c O-ring (Type MR95HP only) - - - - - - - - - - -
5 Valve Plug Guide
Type MR95H
DN 15 / 1/2 in. Body Size
1.4401/1.4404 Stainless steel, NACE(1) GF05519X172
DN 20 and 25 / 3/4 and 1 in. Body sizes
1.4401/1.4404 Stainless steel, NACE(1) GF04830X352
DN 40 and 50 / 1-1/2 and 2 in. Body sizes
1.4401/1.4404 Stainless steel, NACE(1) GF05510X222
Type MR95HP and MR95HT
DN 15 / 1/2 in. Body Size
1.4401/1.4404 Stainless steel, NACE(1) GF05519X172
DN 20 and 25 / 3/4 and 1 in. Body sizes
1.4401/1.4404 Stainless steel, NACE(1) GF04830X352
DN 40 and 50 / 1-1/2 and 2 in. Body sizes
1.4401/1.4404 Stainless steel, NACE(1) GF05510X222
- continued -
*Recommended spare part
1. NACE MR0175-2002, NACE MR0103 and NACE MR0175/ISO 15156.
2. See Type MR95 Reduced Orice Part Numbers table on page 16 for reduced orices
that change Type MR95 Cv values to equivalent Type 95 Cv values.
Key Description Part Number

MR95 Series - AD2000 Compliant
14
D-A-CH Region Only
6 Stem/Stem Assembly
Type MR95H
DN 15 / 1/2 in. Body Size
416 Stainless steel
Without control line ERCA00639A0
With control line ERAA01904A0
316 Stainless steel
Oxygen Service (standard) ERCA00639A4
NACE
(1)
Without control line ERCA00639A1
With control line
Nitrile (NBR) seat ERAA01904A1
Fluorocarbon (FKM) seat ERAA01904A2
DN 20 and 25 / 3/4 and 1 in. Body sizes
416 Stainless steel
Without control line ERCA00640A0
With control line ERAA01896A0
316 Stainless steel
Oxygen Service (standard) ERCA00640A4
NACE
(1)
Without control line ERCA00640A1
With control line
Nitrile (NBR) seat ERAA01896A1
Fluorocarbon (FKM) seat ERAA01896A2
DN 40 and 50 / 1-1/2 and 2 in. Body sizes
416 Stainless steel
Without control line GF05507X022
With control line ERAA01906A0
316 Stainless steel
Oxygen Service (standard) GF05507X062
NACE
(1)
Without control line GF05507X032
With control line
Nitrile (NBR) seat ERAA01906A2
Fluorocarbon (FKM) seat ERAA01906A3
Type MR95HT
DN 15 / 1/2 in. Body Size
416 Stainless steel ERCA00639A0
316 Stainless steel ERCA00639A4
DN 20 and 25 / 3/4 and 1 in. Body sizes
416 Stainless steel ERCA00640A0
316 Stainless steel ERCA00640A4
DN 40 and 50 / 1-1/2 and 2 in. Body sizes
416 Stainless steel GF05507X022
316 Stainless steel GF05507X062
Type MR95HP
DN 15 / 1/2 in. Body Size
416 Stainless steel
Without control line ERCA00639A0
With control line ERAA01904A0
316 Stainless steel, NACE(1)
Without control line ERCA00639A1
With control line
Nitrile (NBR) seat ERAA01904A1
Fluorocarbon (FKM) seat ERAA01904A2
DN 20 and 25 / 3/4 and 1 in. Body sizes
416 Stainless steel
Without control line ERCA00640A0
With control line ERAA01896A0
316 Stainless steel, NACE(1)
Without control line ERCA00640A1
With control line
Nitrile (NBR) seat ERAA01896A1
Fluorocarbon (FKM) seat ERAA01896A2
DN 40 and 50 / 1-1/2 and 2 in. Body sizes
416 Stainless steel
Without control line GF05507X022
With control line ERAA01906A0
316 Stainless steel, NACE(1)
Without control line GF05507X032
With control line
Nitrile (NBR) seat ERAA01906A2
Fluorocarbon (FKM) seat ERAA01906A3
6a Stem - - - - - - - - - - -
6b Pusher Plate (DN 15 to 25 /
1/2 to 1 in. Body sizes only) - - - - - - - - - - -
6b O-ring (DN 40 and 50
1-1/2 and 2 in. Body sizes only) - - - - - - - - - - -
6c O-ring (DN 15 to 25 / 1/2 to 1 in. Body sizes only) - - - - - - - - - - -
7 Stem Guide Bushing
DN 15 / 1/2 in. Body Size
416 Stainless steel ERCA03694A0
316 Stainless steel, NACE(1), Oxygen Service ERCA03694A1
DN 20 to 50 / 3/4 to 2 in. Body sizes
416 Stainless steel ERCA03668A0
316 Stainless steel, NACE(1), Oxygen Service ERCA03668A1
8 Lower Spring Seat, NACE(1)
Type MR95H
DN 15 / 1/2 in. Body Size,
Stainless steel 1E3954X0042
DN 20 and 25 / 3/4 and 1 in. Body sizes
Stainless steel 1E3986X0042
DN 40 and 50 / 1-1/2 and 2 in. Body sizes
Stainless steel 1P7877X0012
Types MR95HP and MR95HT
DN 15 / 1/2 in. Body Size
Stainless steel ERCA00436A1
DN 20 and 25 / 3/4 and 1 in. Body sizes
Stainless steel 17B8733X022
DN 40 and 50 / 1-1/2 and 2 in. Body sizes
Stainless steel 1P7877X0012
9 Upper Spring Seat, NACE(1)
Type MR95H
DN 15 / 1/2 in. Body Size
Stainless steel ERCA00823A1
DN 20 and 25 / 3/4 and 1 in. Body sizes
Stainless steel 1E3987X0012
DN 40 and 50 / 1-1/2 and 2 in. Body sizes
Stainless steel 1P7876X0012
Types MR95HP and MR95HT
DN 15 / 1/2 in. Body Size
Stainless steel ERCA00382A1
DN 20 and 25 / 3/4 and 1 in. Body sizes
Stainless steel ERCA00138A1
DN 40 and 50 / 1-1/2 and 2 in. Body sizes
Stainless steel 1P7876X0012
10 Pusher Post, DN 40 and 50 / 1-1/2 and 2 in. Body sizes only
Metal-to-metal seat
416 Stainless steel
Types MR95H and MR95HT only GF05509X022
316 Stainless steel
Types MR95H and MR95HT only GF05509X032
Composition seat
416 Stainless steel
Type MR95H and MR95HP only GF05549X022
316 Stainless steel, NACE(1), Oxygen Service
Type MR95H and MR95HP only GF05549X032
11 Control Spring, NACE(1)(2) See Table 3
12* Diaphragm See Following Table
13 Nameplate - - - - - - - - - - -
14* Diaphragm Protector, PTFE, NACE(1)
Types MR95H, MR95HP
DN 15 / 1/2 in. Body Size 11A5130X012
DN 20 and 25 / 3/4 and 1 in. Body sizes 11A5131X012
DN 40 and 50 / 1-1/2 and 2 in. Body sizes 11A5527X012
15 Adjusting Screw, NACE(1)(2)
Sealed Stainless Steel Square Head Adjustment
DN 15 / 1/2 in. Body Size GF05553X022
DN 20 and 25 / 3/4 and 1 in. Body sizes GF05543X022
DN 40 and 50 / 1-1/2 and 2 in. Body sizes GF05522X022
16 Cap Screw, NACE(1)(2)
Type MR95H, MR95HP and MR95HT
DN 15 / 1/2 in. Body Size
Stainless steel (8 required) ERAA50460A0
DN 20 and 25 / 3/4 and 1 in. Body sizes
Stainless steel (8 required) ERAA50461A0
DN 40 and 50 / 1-1/2 and 2 in. Body sizes
Stainless steel (8 required) ERAA50462A0
Key Description Part Number Key Description Part Number
*Recommended spare part
1. NACE MR0175-2002, NACE MR0103 and NACE MR0175/ISO 15156.

MR95 Series - AD2000 Compliant
15
D-A-CH Region Only
17 Jam Nut, NACE(1)(2)
Sealed Stainless Steel Square Head Adjustment
DN 15 / 1/2 in. Body Size ERCA00380A1
DN 20 and 25 / 3/4 and 1 in. Body sizes GF05453X022
DN 40 and 50 / 1-1/2 and 2 in. Body sizes ERCA00633A1
18 Nameplate Drive Screw
Stainless steel (4 required) ERAA01884A0
19* Diaphragm Gasket
For 302 Stainless steel Diaphragm
Type MR95H
DN 15 / 1/2 in. Body Size ERCA00485A0
DN 20 and 25 / 3/4 and 1 in. Body sizes ERCA00510A0
DN 40 and 50 / 1-1/2 and 2 in. Body sizes ERCA00526A0
For 302 Stainless steel Steam Service Diaphragms
Types MR95H, MR95HT
DN 15 / 1/2 in. Body Size ERCA00485A1
DN 20 and 25 / 3/4 and 1 in. Body sizes ERCA00510A1
DN 40 and 50 / 1-1/2 and 2 in. Body sizes ERCA00526A1
For Stainless steel Oxygen Service Diaphragm
Type MR95H
DN 15 / 1/2 in. Body Size ERCA00485A2
DN 20 and 25 / 3/4 and 1 in. Body sizes ERCA00510A2
DN 40 and 50 / 1-1/2 and 2 in. Body sizes ERCA00526A2
20 Pitot Tube (for constructions without control line)
DN 15 / 1/2 in. Body Size
Copper, Oxygen Service ERCA04277A0
304 Stainless steel ERCA04277A1
316 Stainless steel, NACE(1) ERCA04277A2
DN 20 and 25 / 3/4 and 1 in. Body sizes
Copper, Oxygen Service GF05550X012
304 Stainless steel GF05550X022
316 Stainless steel, NACE(1) GF05550X032
DN 40 and 50 / 1-1/2 and 2 in. Body sizes
Copper, Oxygen Service ERCA00381A0
304 Stainless steel ERCA00381A1
316 Stainless steel, NACE(1) ERCA00381A2
21 Diaphragm Head, DN 40 and 50
1-1/2 and 2 in. sizes (2 required)
Plated Steel ERCA00578A0
316 Stainless steel, NACE(1) and
Oxygen Service ERCA00578A1
26 Inner Valve Spring
DN 15 / 1/2 in. Body Size
302 Stainless steel, Oxygen Service ERCA04282A0
Inconel®, NACE(1) ERCA04283A0
DN 20 and 25 / 3/4 and 1 in. Body sizes
302 Stainless steel, Oxygen Service ERCA04284A0
Inconel®, NACE(1) ERCA04285A0
DN 40 and 50 / 1-1/2 and 2 in. Body sizes
302 Stainless steel, Oxygen Service ERCA04286A0
Inconel®, NACE(1) ERCA04287A0
27 Inner Valve Base, DN 40 to 50 / 1-1/2 to 2 in.
416 Stainless steel ERCA00376A1
316 Stainless steel, NACE(1) ERCA00376A2
Brass, Oxygen Service ERCA00376A0
27 Inner Valve Base Assembly, DN 40 and 50
1-1/2 and 2 in., Type MR95HP only
Nitrile (NBR) Seat
416 Stainless steel ERAA01909A0
316 Stainless steel, NACE(1) ERAA01909A1
Fluorocarbon (FKM) Disk
416 Stainless steel ERAA01909A3
316 Stainless steel, NACE(1) ERAA01909A2
29* Gasket (2 required)
For DN 40 and 50 / 1-1/2 and 2 in. only
302 Stainless steel Diaphragm
Type MR95H ERCA00579A0
302 Stainless steel Diaphragm, Oxygen Service
Type MR95H ERCA00579A2
302 Stainless steel Steam Service Diaphragm
Types MR95H, MR95HT ERCA00579A1
31 Locknut, Steel, DN 40 to 50 / 1-1/2 to 2 in. only 1P788724122
47 NACE Tag - - - - - - - - - - -
48 Tag Wire - - - - - - - - - - -
49 Lock Washer (for DN 40 and 50
1-1/2 and 2 in. Body sizes only)
Steel ERCA00379A0
Stainless steel ERCA00379A1
50* Sealing Washer
Sealed Square Head Adjustment
DN 15 / 1/2 in. Body Size 1V205699012
DN 20 and 25 / 3/4 and 1 in. Body sizes 11A9681X012
DN 40 and 50 / 1-1/2 and 2 in. Body sizes 1V424699012
51 Vent, Type Y602-12
DN 40 and 50 / 1-1/2 and 2 in. Body sizes only ERAA02123A0
52 Plug, Stainless steel ERAA01942A0
63 Bottom Plug Seal
DN 15 / 1/2 in. Body Size
Nitrile (NBR) ERCA03016A0
Fluorocarbon (FKM) ERCA03016A1
Ethylene Propylene (EPDM) ERCA03016A2
Graphite ERCA02978A0
DN 20 and 25 / 3/4 and 1 in. Body sizes
Nitrile (NBR) ERCA00628A0
Peruoro Elastomer (FFKM) ERCA00628A3
Fluorocarbon (FKM) ERCA00628A1
Ethylene Propylene (EPDM) ERCA00628A2
Graphite ERCA00517A0
DN 40 and 50 / 1-1/2 and 2 in. Body sizes
Nitrile (NBR) ERCA00630A0
Peruoro Elastomer (FFKM) ERCA00630A3
Fluorocarbon (FKM) ERCA00630A1
Ethylene Propylene (EPDM) ERCA00630A2
Graphite ERCA01407A0
64 Flow Arrow - - - - - - - - - - -
65 Pipe Plug, (DN 20 to 50 / 3/4 to 2 in. Body sizes)
(Type MR95HT, 2 required)
(Other Types with1 gauge, 1 required)
Stainless steel ERAA03131A0
66 Inlet Pressure Gauge
DN 20 to 50 / 3/4 to 2 in. Body sizes
0 to 11 bar / 0 to 160 psi
Stainless steel ERAA03132A3
0 to 20 bar / 0 to 300 psi
Stainless steel ERAA03132A4
0 to 40 bar / 0 to 600 psi
Stainless steel ERAA03132A5
0 to 68 bar / 0 to 1000 psi
Stainless steel ERAA03132A6
67 Outlet Pressure Gauge
DN 20 to 50 / 3/4 to 2 in. Body sizes
0 to 1 bar / 0 to 15 psi
Stainless steel ERAA03132A0
0 to 2 bar / 0 to 30 psi
Stainless steel ERAA03132A1
0 to 4 bar / 0 to 60 psi
Stainless steel ERAA03132A2
0 to 11 bar / 0 to 160 psi
Stainless steel ERAA03132A3
0 to 20 bar / 0 to 300 psi
Stainless steel ERAA03132A4
0 to 40 bar / 0 to 600 psi
Stainless steel ERAA03132A5
69 ATEX Tag - - - - - - - - - - -
70 PED Tag - - - - - - - - - - -
Key Description Part NumberKey Description Part Number
*Recommended spare part
1. NACE MR0175-2002, NACE MR0103 and NACE MR0175/ISO 15156.
2. Part meets NACE requirements only for applications in which the part is not exposed to sour gas.

MR95 Series - AD2000 Compliant
16
D-A-CH Region Only
Key 1, Types MR95H, MR95HP and MR95HT Regulator Body Part Numbers
BODY SIZE END CONNECTION BODY MATERIAL
1.4408 Stainless steel(1)
DN 15 / 1/2 in.
Without Control Line
G Thread ERAA50402A0
Integral PN 16/25/40 RF ERAA50401A0
DN 15 / 1/2 in.
With Control Line G Thread ERAA50403A0(2)
DN 20 / 3/4 in.
Without Gauge Port and Control Line G Thread ERAA50412A0
DN 20 / 3/4 in.
Without Gauge Port but With Control Line G Thread ERAA50413A0
DN 20 / 3/4 in.
With Gauge Port but Without Control Line G Thread ERAA50414A0
DN 25 / 1 in.
Without Gauge Port and Control Line
G Thread ERAA50416A0
Integral PN 16/25/40 RF ERAA50415A0
DN 25 / 1 in.
Without Gauge Port but with Control Line G Thread ERAA50417A0
DN 25 / 1 in.
With Gauge Port but Without Control Line G Thread ERAA50418A0
DN 40 / 1-1/2 in.
Without Gauge Port and Control Line G Thread ERAA50419A0
DN 40 / 1-1/2 in.
Without Gauge Port but With Control Line G Thread ERAA50420A0(2)
DN 40 / 1-1/2 in.
With Gauge Port but Without Control Line G Thread ERAA50421A0
DN 50 / 2 in.
Without Gauge Port and Control Line
G Thread ERAA50423A0
Integral PN 16/25/40 RF ERAA50422A0
DN 50 / 2 in.
Without Gauge Port but With Control Line G Thread ERAA50424A0(2)
DN 50 / 2 in.
With Gauge Port but Without Control Line G Thread ERAA50425A0
1. Meets the chemical and physical requirements of NACE MR0175-2002, NACE MR0103 and NACE MR0175/ISO 15156.
2. Not available for Type MR95HT.
Key 2, Spring Case Part Numbers
TYPE BODY SIZE STYLE SPRING CASE MATERIAL
DN In. 1.4408 Stainless steel(1)
MR95H,
MR95HP,
MR95HT
15 1/2 1/4 G Vent ERAA50448
20 and 25 3/4 and 1 1/4 G Vent ERAA50449
40 and 50 1-1/2 and 2 1/4 G Vent ERAA50450
1. Meets the chemical and physical requirements of NACE MR0175-2002, NACE MR0103 and NACE MR0175/ISO 15156.
Key 3, Reduced Orice Part Numbers
BODY SIZE SEAT TYPE ORIFICE MATERIAL
DN In. Brass 416 Stainless Steel 316 Stainless Steel(1)
15 1/2
Composition Seat
ERAA07695A0 ERAA07695A1 ERAA07695A2
20 to 25 3/4 to 1 ERAA07700A0 ERAA07700A1 ERAA07700A2
40 to 50 1-1/2 to 2 ERAA07698A0 ERAA07698A1 ERAA07698A2
15 1/2
Metal-to-Metal Seat
- - - - - - - - - - - ERAA07694A0 ERAA07694A1
20 to 25 3/4 to 1 - - - - - - - - - - - ERAA07699A0 ERAA07699A1
40 to 50 1-1/2 to 2 - - - - - - - - - - - ERAA07697A0 ERAA07697A1
1. Meets the chemical and physical requirements of NACE MR0175-2002, NACE MR0103 and NACE MR0175/ISO 15156.

MR95 Series - AD2000 Compliant
17
D-A-CH Region Only
Key 4, Valve Plug, Metal Seat
TYPE MATERIAL BODY SIZE, DN / IN.
15 / 1/2 20 and 25 / 3/4 and 1 40 and 50 / 1-1/2 and 2(1)
MR95H,
MR95HT
416 Stainless steel ERCA00287A0 GF05476X022 ERCA00375A0
316 Stainless steel ERCA00287A1 GF05476X032 ERCA00375A1
Alloy 6 ERCA00287A4 GF05476X062 ERCA00375A4
1. For Types MR95H and MR95HT only.
Key 4, Disk Holder Assembly, Composition Seat
TYPE MATERIAL BODY SIZE, DN / IN.
15 / 1/2 20 and 25 / 3/4 and 1 40 and 50 / 1-1/2 and 2(1)
Nitrile (NBR) Seat
MR95H
Brass ERCA00635A3 ERCA00636A3 ERCA00637A3
316 Stainless steel ERCA00635A5(1) ERCA00636A5(1) ERCA00637A5(1)
416 Stainless steel ERCA00635A4 ERCA00636A4 ERCA00637A4
MR95HP 316 Stainless steel ERAA01905A1(1) ERAA01892A1(1) ERCA00637A5(1)
416 Stainless steel ERAA01905A0 ERAA01892A0 ERCA00637A4
Fluorocarbon (FKM) Seat
MR95H
Brass ERCA00635A9(2) ERCA00636A9(2) ERCA00637A9(2)
316 Stainless steel ERCA00635B1(1) ERCA00636B1(1) ERCA00637B1(1)
416 Stainless steel ERCA00635B0 ERCA00636B0 ERCA00637B0
MR95HP 316 Stainless steel ERAA01905A2(1) ERAA01892A2(1) ERCA00637B1(1)
416 Stainless steel ERAA01905A3 ERAA01892A3 ERCA00637B0
Peruoroelastomer (FFKM) Seat
MR95H 316 Stainless steel ERCA00635B9 ERCA00636B9 ERCA00637B9
Polytetrauoroethylene (PTFE) Seat
MR95H
Brass ERCA00635B4 ERCA00636B4 ERCA00637B4
316 Stainless steel ERCA00635B6 ERCA00636B6 ERCA00637B6
416 Stainless steel ERCA00635B5 ERCA00636B5 ERCA00637B5
Ethylenepropylene (EPDM) Seat
MR95H 416 Stainless steel ERCA00635A7 ERCA00636A7 ERCA00637A7
1. NACE MR0175-2002, NACE MR0103 and NACE MR0175/ISO 15156.
2. Oxygen Service
Key 12*, Composition Diaphragm, NACE MR0175-2002 and NACE MR0103
TYPE
BODY SIZE DIAPHRAGM MATERIAL
DN In. Neoprene (CR) Fluorocarbon (FKM)
(2 Required)
Ethylene Propylene
(EPDM)
MR95H
MR95HP
15 1/2 ERCA00507A0 ERCA00507A1 ERCA00507A2
40 and 50 1-1/2 and 2 ERCA00661A0 ERCA00661A1 ERCA00661A2
MR95H 20 and 25 3/4 and 1 ERCA00515A0 ERCA00515A1 ERCA00515A2
* Recommended spare part.
Key 12*, Metal Diaphragm
TYPE
BODY SIZE DIAPHRAGM MATERIAL
DN In. 302 Stainless Steel 302 Stainless Steel
(Oxygen Service)
MR95H
15 1/2 ERCA00459A0 ERCA00459A1
20 and 25 3/4 and 1 ERCA00511A0 ERCA00511A1
40 and 50 1-1/2 and 2 ERCA00527A0 ERCA00527A1
MR95HT
15 1/2 ERCA00459A0 - - - - - - - - - - -
20 and 25 3/4 and 1 ERCA00511A0 - - - - - - - - - - -
40 and 50 1-1/2 and 2 ERCA00527A0 - - - - - - - - - - -

L1
L4
L1
L1
50
12
4C
L2
L2
15
17
8
12
1
20
6
3
26
9
2
11
16
7
4
5
63
19
6A
52
18
64
13
18
6B
6C
4B
4A
L2
L4
L2(2)
L2
L4
MR95 Series - AD2000 Compliant
18
GF04914
D-A-CH Region Only
Figure 6. Types MR95H, MR9HP and MR9HT, DN 15 to 25 / 1/2 to 1 in. Body Sizes Assembly
OR(3)
OR(4)
OR(4)
APPLY LUBRICANT OR SEALANT(1):
L1 = GENERAL PURPOSE PTFE OR LITHIUM GREASE
L2 = ANTI-SEIZE COMPOUND
L4 = GRAPHITE SEALANT
1. Lubricants and sealant must be selected such that they meet the temperature requirements.
2. Apply L2 (anti-seize compound) on key 16 for stainless steel bolts.
3. Apply L4 (graphite sealant) instead of L1 (general purpose PTFE or lithium grease) on key 63 for graphite ring.
4. Apply L4 (graphite sealant) instead of L2 (anti-seize compound) on keys 3 and 5 for Type MR95HT.
SEALED ADJUSTING SCREW OPTION
HP OPTION
COMPOSITE SEAT OPTION
METAL DIAPHRAGM OPTION
CONTROL LINE OPTION

15L2
45L1
5
2
17
13
64
18
18
10
51
8
16
12
1
20
6
27
11
31
28
21
7
4
26
3
L2
L2(2)
9 L2
63
L1
L4
29
19
12
6B
L1
6A
52
4B
4A
27A
27B L1
50
L2
L4
L2
L4
MR95 Series - AD2000 Compliant
19
GF04500
D-A-CH Region Only
OR(4)
OR(4)
OR(3)
SEALED ADJUSTING
SCREW OPTION
METAL DIAPHRAGM OPTION
HP OPTION
COMPOSITION SEAT OPTION CONTROL LINE OPTION
APPLY LUBRICANT OR SEALANT(1):
L1 = GENERAL PURPOSE PTFE OR LITHIUM GREASE
L2 = ANTI-SEIZE COMPOUND
L4 = GRAPHITE SEALANT
1. Lubricants and sealants must be selected such that they meet the temperature requirements.
2. Apply L2 (anti-seize compound) on key 16 for stainless steel bolts.
3. Apply L4 (graphite sealant) instead of L1 (general purpose PTFE or lithium grease) on key 63 for graphite ring.
4. Apply L4 (graphite sealant) instead of L2 (anti-seize compound) on keys 3 and 5 for Type MR95HT.
Figure 7. Types MR95H, MR9HP and MR9HT, DN 40 and 50 / 1-1/2 to 2 in. Body Sizes Assembly

MR95 Series - AD2000 Compliant
Americas
McKinney, Texas 75070 USA
T [phone]
[phone]
Europe
Bologna 40013, Italy
T [phone]
Asia Pacic
Singapore 128461, Singapore
T [phone]
Middle East and Africa
Dubai, United Arab Emirates
T [phone]
Emerson Automation Solutions
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Deutschland
T [phone]
D-A-CH Region Only
Fisher.com
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Technologies, Inc. All rights reserved. 10/21.
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