Emerson MR98L, MR98H Instruction Manual

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Instruction Manual D103588X012

January 2021

MR98 Series

MR98 Series Backpressure Regulators, Relief

and Di󰀨erential Relief Valves

P1757_1

TYPE MR98L

P1753_1

TYPE MR98H

Figure 1. Typical MR98 Series Backpressure Regulators, Relief and Differential Relief Valves

MR98 Series

Specications

This section lists the specications for the MR98 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 MR98L: Backpressure regulator/relief valve for spring settings range from 2 to 38 psig /

0.14 to 2.6 bar, available for 1/4 NPT to NPS 1 / DN 25 body sizes only. Type MR98H: Backpressure regulator/relief valve for spring settings range from 5 to 200 psig /

0.34 to 13.8 bar. Type MR98HH: Backpressure regulator/relief valve for spring settings range from 150 to 375 psig /10.3 to 25.9 bar. Type MR98LD: Di󰀨erential pressure relief valve for di󰀨erential set pressures range from 2 to 38 psi / 0.14 to 2.6 bar with maximum inlet/outlet pressure up to 150 psi / 10.3 bar, available for 1/4 NPT to NPS 1 / DN 25 body sizes only. Type MR98HD: Di󰀨erential pressure relief valve for di󰀨erential set pressures from 5 to 200 psi /

0.34 to 13.8 bar with maximum inlet / outlet pressure up to 300 psi / 20.7 bar. Type MR98HDP: Di󰀨erential pressure relief valve for di󰀨erential set pressures range from 5 to 200 psi / 0.34 to 13.8 bar with maximum inlet/ outlet pressure up to 600 psi / 41.4 bar. Type MR98HHD: Di󰀨erential pressure relief valve for di󰀨erential set pressures range from 150 to 375 psi / 10.3 to 25.9 bar with maximum inlet/ outlet pressure up to 400 psi / 27.6 bar.

Body and Orice Sizes

1/4 NPT: 0.284 in. / 7.22 mm NPS 1/2 / DN 15: 0.416 in. / 10.56 mm NPS 3/4 and 1 / DN 20 and 25:

0.631 in. / 16.02 mm

NPS 1-1/2 and 2 / DN 40 and 50:

1.142 in. / 29 mm

Body End Connections

See Tables 1 and 2

Set Pressure Ranges

(1)

See Table 3

Maximum Cold Working Pressures of Body Size

and Materials

(1)

See Table 4

Maximum Temperature Ranges of Diaphragm, Seat, Trim and Body Materials

(1)(2)(3)

See Table 5

Flow Coe󰀩cients

BODY SIZE

NPS DN

1/4 NPT - - - - 1.4 48 34.3

1/2 15 3.4 120 35.3

3/4 and 1 20 and 25 6.5 250 38.5

1-1/2 and 2 40 and 50 20.0 780 39.0

IEC Sizing Coe󰀩cients

BODY SIZE

NPS DN

1/4 NPT - - - - 0.743 0.74 0.95 0.90

1/2 15 0.787 0.78 0.94 0.88

3/4 and 1 20 and 25 0.935 0.70 0.91 0.83

1-1/2 and 2 40 and 50 0.961 0.69 0.94 0.88

Pressure Registration

Internal or External

Shuto󰀨 Classication Per ANSI/FCI 70-3-2004

Metal Seats: Class IV

Polytetrauoroethylene (PTFE): Class IV

Elastomer Seats: Class VI or better

Sour Gas Service Capability

Optional materials are available for applications handling sour gases. These constructions comply with the recommendations of NACE International Standards MR0175-2002, NACE MR0103 and/or NACE MR0175/ISO 15156.

API 614 Compliant

Steel or Stainless steel constructions with Stainless steel trim meet API 614 Requirements.

Approximate Weights

MR98H Series:

1/4 NPT: 5 lbs / 2.3 kg NPS 1/2 / DN 15: 10 lbs / 4.5 kg NPS 3/4 and 1 / DN 20 and 25: 22 lbs / 10 kg NPS 1-1/2 and 2 / DN 40 and 50: 55 lbs / 25 kg

MR98L Series:

1/4 NPT: 7 lbs / 3.2 kg NPS 1/2 / DN 15: 15 lbs / 6.8 kg NPS 3/4 and 1 / DN 20 and 25: 35 lbs / 16 kg

Maximum Inlet, Outlet and Spring Case

Pressure Ratings

(1)

See Table 4

1. The pressure/temperature limits in this Instruction Manual and any applicable standard limitation should not be exceeded.

2. Pressure and/or the body end connection may decrease the maximum temperatures.

3. Special low temperature constructions for process temperatures between -76 to 104°F / -60 to 40°C are available by request. The low temperature construction passed Emerson Process Management Regulator Technologies, Inc. (Emerson) laboratory testing for lockup and external leakage down to -76°F / -60°C.

Table 1. Types MR98L and MR98LD Regulators Body Constructions

BODY SIZE BODY CONSTRUCTION END CONNECTION STYLE

1/4 NPT Without Control Line and Gauge Port NPT

NPS 1/2 / DN 15

NPS 3/4 / DN 20

NPS 1 / DN 25

- 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.

Without Control Line and Gauge Port

Welded PN 16/25/40 RF

With Control Line but Without Gauge Port NPT

Without Control Line and Gauge Port

Welded PN 16/25/40 RF

With Control Line but Without Gauge Port NPT

With Gauge Port but Without Control Line

Welded PN 16/25/40 RF

Without Control Line and Gauge Port

Welded PN 16/25/40 RF

With Control Line but Without Gauge Port NPT

With Gauge Port but Without Control Line

Welded PN 16/25/40 RF

NPT

SWE

Welded CL150 RF

Welded CL300 RF

NPT

SWE

Welded CL150 RF

Welded CL300 RF

NPT

Welded CL150 RF

Welded CL300 RF

NPT

SWE

Welded CL150 RF

Welded CL300 RF

NPT

Welded CL150 RF

Welded CL300 RF

MR98 Series

BODY MATERIAL

(1)

Gray Cast Iron

WCC or LCC Steel

CF8M Stainless steel

CF3M Stainless steel

(1)

Hastelloy or

Monel

Monel® is a mark owned by Special Metals Corporation. Hastelloy® C is a mark owned by Haynes International, Inc.

MR98 Series

Table 2. Types MR98H, MR98HD, MR98HH, MR98HDP and MR98HHD Regulators Body Constructions

BODY SIZE BODY CONSTRUCTION END CONNECTION STYLE

1/4 NPT Without Control Line and Gauge Port NPT

Without Control Line and Gauge Port

NPS 1/2 / DN 15

With Control Line but Without Gauge Port

Without Control Line and Gauge Port

NPS 3/4 / DN 20

With Control Line but Without Gauge Port

With Gauge Port but Without Control Line

Without Control Line and Gauge Port

NPS 1 / DN 25

With Control Line but Without Gauge Port

With Gauge Port but Without Control Line

- 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.

2. Available for Types MR98H and MR98HD only.

Welded PN 16/25/40 RF

Integral PN 16/25/40 RF

Welded PN 16/25/40 RF

Integral PN 16/25/40 RF

Welded PN 16/25/40 RF

NPT

SWE

Welded CL150 RF

Welded CL300 RF

Integral CL150 RF

Integral CL300 RF

NPT

Welded CL150RF

Welded CL300RF

NPT

SWE

Welded CL150 RF

Welded CL300 RF

NPT

Welded CL150 RF

Welded CL300 RF

NPT

Welded CL150 RF

Welded CL300 RF

NPT

SWE

Welded CL150 RF

Welded CL300 RF

Integral CL150 RF

Integral CL300 RF

NPT

Welded CL150 RF

Welded CL300 RF

NPT

Welded CL150 RF

Welded CL300 RF

BODY MATERIAL

(1)

(2)

Gray Cast Iron

WCC or LCC Steel

CF8M Stainless steel

(1)

or Hastelloy

CF3MStainless steel

Aluminum-Bronze

Monel

Monel® is a mark owned by Special Metals Corporation. Hastelloy® C is a mark owned by Haynes International, Inc.

- continued -

MR98 Series

Table 2. Types MR98H, MR98HD, MR98HH, MR98HDP and MR98HHD Regulators Body Constructions (continued)

BODY SIZE BODY CONSTRUCTION END CONNECTION STYLE

NPT

SWE

Without Control Line and Gauge Port

NPS 1-1/2 / DN 40

Types MR98H and MR98HD only

With Control Line but Without Gauge Port

With Gauge Port but Without Control Line

Without Control Line and Gauge Port

NPS 2 / DN 50

Types MR98H and MR98HD only

With Control Line but Without Gauge Port

With Gauge Port but Without Control Line

- 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.

Welded CL150 RF

Welded CL300 RF

Welded PN 16/25/40 RF

NPT

Welded CL150 RF

Welded CL300 RF

NPT

Welded CL150 RF

Welded CL300 RF

Welded PN 16/25/40 RF

NPT

SWE

Welded CL150RF

Welded CL300RF

Welded PN 16/25/40 RF

Integral CL150 RF

Integral CL300 RF

Integral PN 16/25/40 RF

NPT

Welded CL150 RF

Welded CL300 RF

NPT

Welded CL150 RF

Welded CL300 RF

Welded PN 16/25/40 RF

BODY MATERIAL

(1)

Gray Cast Iron

WCC or LCC Steel

CF8M Stainless steel

CF3M Stainless steel

(1)

Hastelloy or

Aluminum-Bronze

Monel

is a mark owned by Special Metals Corporation.

Hastelloy® C is a mark owned by Haynes International, Inc.

MR98 Series

Table 3. MR98 Series Body Sizes, Pressure Ranges and Spring Information

TYPE

BODY SIZE

CONTROL

PRESSURE RANGE

NPS DN psig bar In. mm In. mm

2 to 7 0.14 to 0.48 0.148 3.76 2.00 50.8 Zinc-plated steel 1E392527022 Yellow

1/4 NPT - - - -

6 to 14 0.41 to 0.97 0.170 4.32 2.00 50.8 Zinc-plated steel ERAA01888A0 Green

12 to 25 0.83 to 1.7 0.207 5.26 1.938 49.2 Powder-coated steel ERAA01889A0 Red

20 to 38 1.4 to 2.6 0.225 5.72 2.086 53.0 Powder-coated steel ERAA01929A0 Blue

2 to 7 0.14 to 0.48 0.207 5.26 2.50 63.5 Powder-coated steel

6 to 14 0.41 to 0.97 0.234 5.94 2.595 65.9 Powder-coated steel

12 to 25 0.83 to 1.7 0.283 7.19 2.44 62.0 Powder-coated steel

20 to 38 1.4 to 2.6 0.331 8.41 2.250 57.2 Powder-coated steel

2 to 7 0.14 to 0.48 0.306 7.77 4.00 102 Powder-coated steel

6 to 14 0.41 to 0.97 0.343 8.71 4.00 102 Powder-coated steel

12 to 25 0.83 to 1.7 0.406 10.3 4.00 102 Powder-coated steel

MR98L

and

MR98LD

1/2 15

3/4

and 1

20 and

20 to 38 1.4 to 2.6 0.468 11.9 3.75 95.3 Powder-coated steel 1L380127082 Blue

2 to 7 0.14 to 0.48 0.306 7.77 4.00 102 Powder-coated Stainless steel 1E3989X0052 Yellow

3/4

and 1

20 and

6 to 14 0.41 to 0.97 0.375 9.53 3.88 98.6 Stainless steel 1K762537022 Unpainted

12 to 25 0.83 to 1.7 0.437 11.1 4.00 102 Stainless steel 11A8269X012 Unpainted

15 to 35 1.0 to 2.4 0.148 3.76 2.00 50.8 Zinc-plated steel 1E392527022 Yellow

1/4 NPT - - - -

25 to 75 1.7 to 5.2 0.170 4.32 2.00 50.8 Zinc-plated steel ERAA01888A0 Green

70 to 140 4.8 to 9.7 0.207 5.26 1.938 49.2 Powder-coated steel ERAA01889A0 Red

130 to 200 9.0 to 13.8 0.225 5.72 2.086 53.0 Powder-coated steel ERAA01929A0 Blue

15 to 35 1.0 to 2.4 0.207 5.26 2.50 63.5 Powder-coated steel

1/2 15

25 to 75 1.7 to 5.2 0.234 5.94 2.595 65.9 Powder-coated steel

70 to 140 4.8 to 9.7 0.283 7.19 2.44 62.0 Powder-coated steel

130 to 200 9.0 to 13.8 0.331 8.41 2.250 57.2 Powder-coated steel

MR98H,

MR98HD

and

MR98HDP

3/4

and 1

20 and

15 to 35 1.0 to 2.4 0.306 7.77 4.00 102 Powder-coated steel

25 to 75 1.7 to 5.2 0.343 8.71 4.00 102 Powder-coated steel

70 to 140 4.8 to 9.7 0.406 10.3 4.00 102 Powder-coated steel

130 to 200 9.0 to 13.8 0.468 11.9 3.75 95.3 Powder-coated steel 1L380127082 Blue

15 to 35 1.0 to 2.4 0.306 7.77 4.00 102 Powder-coated Stainless steel 1E3989X0052 Yellow

3/4

and 1

20 and

25 to 75 1.7 to 5.2 0.375 9.53 3.88 98.6 Stainless steel 1K762537022 Unpainted

70 to 140 4.8 to 9.7 0.437 11.1 4.00 102 Stainless steel 11A8269X012 Unpainted

5 to 35 0.34 to 2.4 0.468 11.9 6.562 167 Powder-coated steel

1-1/2

and 2

and 50

20 to 65 1.4 to 4.5 0.500 12.7 6.50 165 Powder-coated steel

50 to 100 3.4 to 6.9 0.562 14.3 6.562 167 Powder-coated steel

75 to 170 5.2 to 11.7 0.625 15.9 6.565 167 Powder-coated steel

MR98HH

MR98HHD

1. All springs may be backed o󰀨 to 0 psig / 0 bar. However, highest capacities and best performances are obtained by using these springs in their recommended ranges.

2. 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.

3. Available in Inconel

4. Spring range changes to 5 to 60 psig / 0.34 to 4.1 bar for the Inconel® option.

5. Spring range changes to 50 to 120 psig / 3.4 to 8.3 bar for the Inconel® option.

1/4 NPT - - - - 150 to 375 10.3 to 25.9 0.281 7.14 4.125 105 Powder-coated steel 1N942227142 Unpainted

and

1/2 15 150 to 375

3/4

and 1

150 to 375 10.3 to 25.9 0.593 15.1 6.380 162 Chromium-silicon steel 1N9441X0022 Light gray

and 25

10.3 to 25.9 0.394 10.0 5.063 129 Powder-coated steel 1N943427142 Unpainted

(1)

SPRING WIRE

DIAMETER

SPRING FREE

LENGTH

SPRING MATERIAL

SPRING PART

(2)

(3)

(4)

(5)

NUMBER

ERCA04288A0 Yellow

ERAA01910A0 Green

ERAA01911A0 Red

ERAA02889A0 Blue

1E398927022 Yellow

1E399027142 Green

1E399127162 Red

ERCA04288A0 Yellow

ERAA01910A0 Green

ERAA01911A0 Red

ERAA02889A0 Blue

1E398927022 Yellow

1E399027142 Green

1E399127162 Red

1E792327092 Dark gray

ERCA04290A0 Black with light blue stripe

ERAA01893A0 Light gray

1P7888X0022 Black

SPRING COLOR

Inconel

is a mark owned by Special Metals Corporation.

MR98 Series

Table 4. Maximum Cold Working Pressures of Body Size and Materials

REGULATOR

TYPE

BODY SIZE

NPS DN psig bar psig bar psig bar

BODY AND

SPRING CASE

MATERIALS

Gray cast iron 60 4.1 60 4.1 50 3.4

MR98L/LD

MR98H/

MR98HD

1/4 NPT

1/2, 3/4, 1

1/2, 3/4, 1 15, 20, 25

1/4 NPT

1/2, 3/4, 1,

1-1/2, 2

1/2, 3/4, 1,

1-1/2, 2

- - - -

15, 20, 25

- - - -

15, 20, 25,

40, 50

15, 20, 25,

40, 50

Steel 150 10.3 150 10.3 125 8.6

Stainless steel 150 10.3 150 10.3 125 8.6

Monel

Hastelloy

C 150 10.3 150 10.3 125 8.6

Gray Cast iron 300 20.7 300 20.7 250 17.2

Steel 300 20.7 300 20.7 300 20.7

Stainless steel 300 20.7 300 20.7 300 20.7

Monel

Hastelloy

C 300 20.7 300 20.7 300 20.7

Aluminum-Bronze 300 20.7 300 20.7 300 20.7

MR98HDP

(4)(5)

1/4 NPT

1/2, 3/4, 1,

1-1/2, 2

1/2, 3/4, 1,

1-1/2, 2

- - - -

15, 20, 25,

40, 50

15, 20, 25,

40, 50

Steel 600 41.4 600 41.4 600 41.4

Stainless steel 550 37.9 550 37.9 550 37.9

Monel

Hastelloy

C 550 37.9 550 37.9 550 37.9

Aluminum-Bronze 550 37.9 550 37.9 550 37.9

Steel 400 27.6 400 27.6 400 27.6

Stainless steel 400 27.6 400 27.6 400 27.6

Monel

Hastelloy

C 400 27.6 400 27.6 400 27.6

MR98HH/

MR98HHD

1/4 NPT

1/2, 3/4, 1

(4)

1/2, 3/4, 1 15, 20, 25

- - - -

15, 20, 25

Aluminum-Bronze 400 27.6 400 27.6 400 27.6

1. The pressure/temperature limits in this Installation Manual and any applicable standard limitation should not be exceeded.

2. Temperature, trim material and/or the body end connection may decrease these maximum pressures.

3. Maximum inlet pressure equals set pressure plus build-up.

4. Maximum di󰀨erential pressure between inlet pressure and loading pressure should never exceed 300 psig / 20.7 bar.

5. Meets API 614 requirements (with Stainless steel trim).

MAXIMUM

INLET PRESSURE

(3)

150 10.3 150 10.3 125 8.6

300 20.7 300 20.7 300 20.7

550 37.9 550 37.9 550 37.9

400 27.6 400 27.6 400 27.6

(1)(2)

MAXIMUM

OUTLET PRESSURE

MAXIMUM

SPRING CASE PRESSURE

Table 5. Temperature Capabilities

MATERIAL SEAT DIAPHRAGM O-RING

Nitrile (NBR)

Neoprene (CR)

Fluorocarbon (FKM)

(3)

Ethylenepropylene (EPDM)

Peruoroelastomer (FFKM)

PTFE

Metal

 



  

 

BODY MATERIAL

DIAPHRAGM

PROTECTOR

(1)(2)(5)

TEMPERATURE

°F °C

-40 to 180 -40 to 82

0 to 300,

Limited to 200°F for hot water

-18 to 149,

Limited to 93°C for hot water

20 to 275 -7 to 135

0 to 425 -18 to 218



-40 to 400 -40 to 204

-40 to 450 -40 to 232

TEMPERATURE

°F °C

Gray Cast iron -20 to 406 -29 to 208

(4)

WCC Steel

(4)

LCC Steel

Stainless steel

1. The pressure/temperature limits in this Instruction Manual and any applicable standard limitation should not be exceeded.

2. Pressure and/or the body end connection may decrease these maximum temperatures.

3. Not for use on steam service.

4. Meets API 614 requirements (with Stainless steel trim).

5. Special low temperature constructions for process temperatures between -76 to 104°F / -60 to 40°C are available by request. The low temperature construction passed Emerson laboratory testing for lockup and external leakage down to -76°F / -60°C.

Monel

is a mark owned by Special Metals Corporation.

Hastelloy® C is a mark owned by Haynes International, Inc.

(4)

, Monel® or Hastelloy® C -40 to 450 -40 to 232

-20 to 450 -29 to 232

-40 to 450 -40 to 232

MR98 Series

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™ backpressure regulators, relief and di󰀨erential relief valves must be installed, operated and maintained

in accordance with federal, state and local codes, rules and regulations and Emerson instructions.

If a leak develops or if the outlet continually vents gas, service to the unit may be required. Failure to correct trouble could result in a hazardous condition. Only a qualied person shall install or service the unit.

Installation, operation and maintenance

procedures performed by unqualied

person may result in improper adjustment and unsafe operation. Either condition may result in equipment damage or

personal injury. Call a qualied person

when installing, operating and maintaining

the MR98 Series backpressure regulators, relief and di󰀨erential relief valves.

Introduction

Scope of the Manual

This manual provides instructions for the installation, adjustment, maintenance and parts ordering information of MR98 Series backpressure regulators, relief and di󰀨erential relief valves. Instructions and parts lists for other equipment mentioned in this Instruction Manual are found in separate manuals.

Product Description

The MR98 Series backpressure regulator, relief and di󰀨erential relief valves 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 system, test xtures and sterilizers.

Backpressure Regulator / Pressure Relief Valve—

Types MR98L, MR98H and MR98HH regulators are direct-operated backpressure regulator/relief valve for pressure control requiring constant outlet pressures between 2 to 375 psig / 0.14 to 25.9 bar.

Di󰀨erential Pressure Relief Valve—Types MR98LD, MR98HD, MR98HDP and MR98HHD regulators are direct-operated di󰀨erential relief valve with di󰀨erential pressure range from 2 to 600 psig / 3.4 to 41.4 bar.

See Tables 1 through 5 for detailed breakdown of the various construction o󰀨erings.

Principle of Operation

Relief or backpressure valves respond to changes in upstream pressure. Pressure changes register under the diaphragm (see Figure 2) through a registration hole in the valve body or through an external control line. When the pressure increases above the spring setting, the pressure underneath the diaphragm overcomes the spring compression. This causes the valve plug to move away from the orice. The ow path through the valve is open and excess pressure is vented. When upstream pressure drops below setpoint, the valve closes.

Di󰀨erential relief valves are used to maintain a di󰀨erential pressure between the controlled pressure and loading pressure of a system. The spring setting determines the di󰀨erential.

The di󰀨erential relief valve responds to both controlled pressure and loading pressure and opens or closes as these pressures change. If the loading pressure increases, pressure on the upper side of the diaphragm increases. The valve plug moves closer to the orice and restricts the ow through the relief valve. When loading pressure decreases, pressure on the upper side of the diaphragm decreases. This allows the valve plug to move away from the orice and allow more ow through the di󰀨erential relief valve (to atmosphere or back into the system). The di󰀨erential relief valve opens and closes in response to changes in the controlled pressure. In this way, the di󰀨erential pressure between the controlled and uncontrolled pressures is maintained.

INLET PRESSURE

OUTLET PRESSURE

ATMOSPHERIC PRESSURE

VENT

MR98 Series

ADJUSTING SCREW

CONTROL SPRING

DIAPHRAGM

VALVE PLUG

ORIFICE

M1240_12/2019

TYPE MR98H WITH INTERNAL

PRESSURE REGISTRATION

INLET PRESSURE

OUTLET PRESSURE

ATMOSPHERIC PRESSURE

METAL DIAPHRAGMS

SPRING

GASKET

FOR TYPE MR98H WITH TWO METAL DIAPHRAGMS

(ALSO TYPICAL OF TYPES MR98L AND MR98HH EXCEPT FOR

TYPE MR98L, 1/4 NPT BODY, 2 TO 7 psi / 0.1 TO 0.48 bar RANGE)

CONTROL LINE TAP

NPS 1/2 / DN 15 TYPE MR98H

WITH EXTERNAL

PRESSURE REGISTRATION

SPRING

TYPE MR98L (1/4 NPT BODY, 2 TO 7 psi / 0.14 TO 0.48 bar RANGE)

M1239_12/2019

SIDE AND INTERNAL VIEW OF

NPS 3/4 TO 2/ DN 20 TO 50

TYPE MR98H WITH EXTERNAL

PRESSURE REGISTRATION

(ALSO TYPICAL OF TYPE MR98L,

NPS 1/2 to 2 / DN 15 TO 50 BODIES)

METAL DIAPHRAGM

GASKET

WITH ONE METAL DIAPHRAGM

Figure 2. MR98 Series Operational Schematics

OUTLET PRESSURE

INLET PRESSURE

LOADING PRESSURE

MR98 Series

HANDWHEEL

CONTROL SPRING

LOADING PRESSURE

INLET TAP

DIAPHRAGM

VALVE PLUG

ORIFICE

M1242_12/2019

INLET PRESSURE OUTLET PRESSURE

LOADING PRESSURE

CONTROL LINE TAP

TYPE MR98HD WITH EXTERNAL PRESSURE REGISTRATIONTYPE MR98HD WITH INTERNAL PRESSURE REGISTRATION

SPRING

GASKET

METAL DIAPHRAGMS

FOR TYPES MR98HD, MR98LD, MR98HDP AND MR98HHD WITH TWO METAL DIAPHRAGMS, ASSEMBLE DIAPHRAGM GASKETS UNDER AND

ABOVE THE METAL DIAPHRAGMS AS SHOWN ABOVE

Figure 2. MR98 Series Operational Schematics (continued)

LOW PRESSURE (FOR LOADING)

CONTROLLED HIGH PRESSURE

TYPE MR98LD

Figure 3. Installation Schematics for Types MR98LD and MR98HD Relief Valves

LOADING PRESSURE

RELIEF OUTLET AND OPTIONAL

PIPING TO SYSTEM

MR98 Series

HIGH PRESSURE

UNCONTROLLED LOW PRESSURE

Figure 3. Installation Schematics for Types MR98LD and MR98HD Relief Valves (continued)

Installation

WARNING

Personal injury or system damage may

result if this backpressure regulator, relief or di󰀨erential relief valve is installed where service conditions could exceed the limits given on the Specications section and/or

regulator nameplate.

Additionally, physical damage to the

backpressure regulator or relief valve

may result in personal injury or property

CONTROLLED HIGH PRESSURE

PUMP

TYPE MR98HD

damage due to escaping of accumulated

gas. To avoid such injury and damage, install the backpressure regulator or relief valve 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.

MR98 Series

Before installing the regulator:

• Unpack the backpressure regulator or relief valve

and remove the protective shipping plugs from the end connections of the body and the pressure connection in the spring case.

• Check the backpressure regulator or relief valve

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 backpressure

regulator or relief valve is in the same direction as the arrow on the body.

• For a differential relief valve, the design of the

valve isolates the diaphragm and pressure loading spring case from the main flow stream. The higher pressure is measured inside the body through a registration hole on the inlet side of the body or through the external control line. If loading pressure is required, connect the loading pressure line to the 1/4 NPT connection in the spring case. If loading pressure is not required, vent this connection to the atmosphere.

Overpressure Protection

WARNING

Overpressuring any portion of this

equipment may result in equipment

damage, leaks in the relief valve/ backpressure regulator or personal injury due to bursting of pressure-

containing parts.

Relief, di󰀨erential relief or backpressure ranges are from 2 to 375 psig / 0.14 to 25.9 bar. The individual spring range of your valve is stamped on the nameplate.

Maximum inlet pressure depend upon body materials and temperatures. See Specications section or the maximum inlet pressure of the valve and the maximum spring case loading pressures stamped on the nameplate of Types MR98LD, MR98HD, MR98HDP and MR98HHD. The valve should be inspected for damage after any overpressure condition.

Vents and Relief Valve Outlet

WARNING

If using an MR98 Series backpressure regulator, relief or di󰀨erential relief valve on hazardous or ammable gas service,

personal injury and property damage

could occur due to re or explosion of vented gas that may have accumulated.

To prevent such injury or damage, provide piping or tubing to vent the gas to a safe, well-ventilated area. All vents 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 vent or vent line.

If remote venting is necessary, an optional tapped vent in the spring case is available. Install remote vent lines in the spring case and outlet openings. The vent lines must have the largest practical diameter and be as short as possible with a minimum number of bends or elbows. Install the vent line according to applicable federal, state and local codes and regulations.

Startup

Note

The Specications section and Tables 4 shows the maximum inlet and the di󰀨erential pressures for specic constructions. Use pressure gauges

to monitor inlet pressure, outlet pressure and any loading pressure during startup.

MR98 Series

Special care should be taken during startup when using a di󰀨erential relief valve to ensure the di󰀨erential pressure between the inlet and spring case of the

regulator does not exceed the maximum

allowable value.

Key numbers are shown in Figures 4 through 10.

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 (for Types MR98L, MR98H and MR98HH) or handwheel (for Types MR98LD, MR98HD, MR98HDP and MR98HHD) 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 set pressure

according to the Adjustment procedure.

Types MR98LD, MR98HD, MR98HDP and MR98HHD

Turn the handwheel (key 38, Figures 5, 8 and 9) clockwise to increase di󰀨erential pressure setting. Turn the handwheel counterclockwise to decrease the di󰀨erential pressure setting.

Shutdown

Relief Valve

1. Close the upstream shuto󰀨 valve to the regulator inlet.

2. Close the downstream shuto󰀨 valve to the regulator outlet.

3. Slowly open the downstream vent valve to vent downstream pressure.

4. Leave the downstream vent valve open to vent inlet pressure and to release all remaining pressure in the regulator by opening the upstream vent valve or by turning the adjusting screw fully counterclockwise.

Adjustment

Each unit is factory set for the pressure setting specied on the order or at the mid-point of the spring range. The allowable spring range is stamped on the nameplate. If a pressure setting beyond the indicated range is required, replace with the appropriate spring. Be sure to label the regulator/valve to indicate the new pressure range.

Always use a pressure gauge to monitor pressure when making adjustments.

All MR98 Series regulator springs can be backed o󰀨 to zero pressure. Recommended set pressure ranges available, maximum inlet pressures and temperatures and color codes of the respective springs are shown in the Specications section and Table 3.

Types MR98L, MR98H and MR98HH

1. Loosen the jam nut (key 17, Figures 4, 6, 7 and 10).

2. To increase the set pressure or pressure setting, turn the adjusting screw (key 15) clockwise. Turn the adjusting screw counterclockwise to decrease the set pressure or pressure setting.

3. Tighten the jam nut (key 17).

Di󰀨erential Valve (Pressure-Loaded System)

1. Close the upstream shuto󰀨 valve to the regulator inlet.

2. Close the downstream shuto󰀨 valve to the regulator outlet.

WARNING

To avoid damage of internal parts from

a pressure-loaded actuator, carefully

vent the regulator spring case pressure while monitoring both inlet and loading pressure to ensure the di󰀨erential pressure between inlet and loading does not exceed 300 psid / 20.1 bar d.

3. Vent the loading pressure slowly to release pressure in the spring case.

4. Slowly open the downstream vent valve to vent downstream pressure.

5. Leave the downstream vent valve open to vent inlet pressure and to release all remaining pressure in the regulator by opening the upstream vent valve or by turning the adjusting screw fully counterclockwise.

MR98 Series

Table 6. Torque Specifications

8 to 11

13 to 18

33 to 41 54 to 68

(1)

ORIFICE VALVE PLUG GUIDE BOTTOM PLUG

6 to 8 34 to 38 50 to 60

180 to 200

8 to 11

46 to 51 68 to 81

244 to 271

40 to 50

70 to 90

85 to 100

125 to 150

53 to 68

94 to 122 115 to 136 169 to 203

50 to 58

75 to 90 100 to 125 170 to 200

68 to 79

102 to 122

136 to 169

230 to 271

BODY SIZE SPRING CASE BOLTS

NPS DN Ft-lbs N•m Ft-lbs N•m Ft-lbs N•m Ft-lbs N•m

1/4 NPT

1/2

3/4 and 1

1-1/2 and 2

1. Reduce spring case bolt’s torque by 30% when using Ethylenepropylene (EPDM) diaphragms. Note: Pusher post lock nut (key 31) should be installed with an additional 1/8 to 1/4 turn when washer is at. See step 10 in the “Disassembly to Replace Diaphragm and Seats” section or

detailed instruction.

- - - -

20 and 25 40 and 50

6 to 8

10 to 13

24 to 30 40 to 50

Backpressure Regulator

1. Close the upstream shuto󰀨 valve to the regulator inlet.

2. Close the downstream shuto󰀨 valve to the regulator outlet.

3. To avoid internal damage due to reverse pressurization of main valve components, bleed backpressure regulator inlet pressure rst before bleeding outlet pressure.

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 relief valve

or regulator from system pressure and

relieving all internal pressure from the relief valve or regulator.

To avoid possible personal injury from

spring or pressure-loaded actuator, make sure that the adjusting screw is

completely backed o󰀨 or the spring case pressure is vented prior to disassembly.

Otherwise, the spring load or loading pressure could forcefully eject the spring case.

Relief valves or 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™ relief valves

and regulators.

Due to normal wear or damage that may occur from external sources, this

relief valve or backpressure 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 and damage that may occur from external sources, relief valve parts such as the O-rings, gaskets, diaphragm, orice and valve plug should be inspected periodically and replaced as necessary. The frequency of inspection and replacement depends upon the severity of service conditions or the requirements of state and federal laws.

Instructions are given below for disassembly of the MR98 Series. These valves do not have to be removed from the pipeline to inspect internal parts. Suitable lubricants are indicated on the assembly drawings. Apply the recommended lubricants as the relief valve is being reassembled. Refer to Figures 4 to 10 while servicing the relief valve.

Flange Cap Screw Torque Inspection

Retorquing of spring case cap screws may be necessary for some MR98 Series regulators after a period of use. Retorque the cap screws as follows:

1. Shut down the relief valve or backpressure regulator. Refer to Shutdown section for the proper procedure.

2. Retighten the cap screws (key 16) in a crisscross pattern. See Table 6 for proper torque values.

3. Follow the Startup section to repressurize the relief valve or backpressure regulator.

4. Refer to the Disassembly to Replace Diaphragm and Seats section as needed.

MR98 Series

Table 7. Number of Diaphragms Required

BODY SIZE TYPE SPRING RANGE DIAPHRAGM MATERIAL NUMBER OF DIAPHRAGM

All

1/4 NPT

NPS 1/2 to 2 /

DN 15 to 50

MR98L and MR98LD

2 to 7 psi / 0.1 to 0.5 bar Metal 1

All except 2 to 7 psi / 0.1 to 0.5 bar Metal 2

MR98H, MR98HH,

MR98HD, MR98HDP

and MR98HHD

All All

Neoprene (CR) 1

Fluorocarbon (FKM) 2

Ethylenepropylene (EPDM) 1

Neoprene (CR) 1

Fluorocarbon (FKM) 2

Ethylenepropylene (EPDM) 1

Metal 2

Neoprene (CR) 1

Fluorocarbon (FKM) 2

Ethylenepropylene (EPDM) 1

Metal 2

Disassembly to Replace Diaphragm and Seats

CAUTION

Metal diaphragms have thin sharp edges. To avoid hand cuts, be careful

when handling the diaphragm, particularly the diaphragm edge.

If the relief valve is leaking, the diaphragm may be ruptured or the seating surfaces nicked or scratched. Proceed as follows to inspect or replace the diaphragm, orice and valve plug.

1. Shut down the backpressure regulator or relief valve. Refer to Shutdown section for the proper procedure.

2. For Types MR98LD, MR98HD, MR98HDP and MR98HHD: Release all spring compression by turning the adjusting screw or handwheel (key 33 or 38) counterclockwise until it turns freely without resistance from the spring.

For Types MR98L, MR98H and MR98HH:

Relieve the spring tension by loosening the jam nut (key 17) and turning the adjusting screw (key 15) counterclockwise.

3. Remove cap screws (key 16) and lift o󰀨 the spring case (key 2), upper spring seat (key 9) and relief valve spring (key 11). Lift out the diaphragm unit which includes the lock nut (key 31), lock washer (key 28), pusher post (key 10), gasket (key 29), lower spring seat (key 8), diaphragm (key 12), diaphragm head (key 21 for Types MR98L and MR98LD, all body sizes and for Types MR98H, MR98HD and

MR98HDP, NPS 1-1/2 and 2 / DN 40 and 50 body sizes), valve plug (key 4) and Type MR98HD has another washer (key 58) and an O-ring (key 45).

4. Check the orice (key 3) for wear or damage. If it needs to be replaced, unscrew the valve plug guide (key 7) and then the orice. The valve plug (key 4) can be removed by sliding it o󰀨 of the pusher post (key 10).

5. Place a small amount of sealant on the threads of the orice (key 3) and valve plug guide (key 7) and reinstall these to the body (key 1). See Table 6 for torque specications.

6. To replace the valve plug O-ring (key 53), remove the machine screw (key 24) and O-ring retainer (key 25) from the plug. Remove and replace the O-ring.

7. Separate the remainder of the diaphragm unit parts. Take the lock nut (key 31) o󰀨 of the pusher post (key 10). Slide o󰀨 the lock washer (key 28), lower spring seat (key 8), diaphragm head (key 21) for Types MR98L and MR98LD, all body sizes and for Types MR98H and MR98HD, NPS 1-1/2 and 2 / DN 40 and 50 body sizes), diaphragm (key 12), washer (key 58) and gasket (key 29).

8. Slip the valve plug (key 4) onto the pusher post (key 10). Place a gasket (key 29) on the shaft of the pusher post over the threaded portion until it rests on the base of the post. If elastomer diaphragm (key 12) is used, place a metal washer (key 58) on top of the gasket. For Type MR98H, NPS 1-1/2 to 2 / DN 40 to 50 with metal diaphragm, place another gasket on the shaft of the pusher post until it rests on the bottom diaphragm head (key 21), see Figure 7.

MR98 Series

Note

If a metal diaphragm is to be replaced by

an elastomer diaphragm or an elastomer

diaphragm by a metal diaphragm, a new

pusher post is required. Each diaphragm

material requires a di󰀨erent pusher post length and make sure the proper number

of metal or elastomer diaphragm that will

be used is followed. Refer to the Parts List section or Table 7 for the correct number of diaphragm to be used.

9. See Figures 4 to 10. For the metal diaphragms (key 12), replace the large diaphragm gasket (key 19) on the surface of the body (key 1) that will support the diaphragms. There will be two diaphragms used per regulator, except for 1/4 NPT Types MR98L and MR98LD with 2 to 7 psi / 0.1 to 0.5 bar spring range, which use only one 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 diaphragm is being used then the raised surface should be facing down (towards the body) (see Figure 2). For elastomer diaphragms, the printed side should be facing upwards when installed.

10. Slip the lower spring seat (key 8) and lock washer (key 28) back onto the pusher post (key 10). Lubricate the threads of the pusher post and tighten the pusher post lock nut (key 31) until the lock washer is at and then turn the nut an additional 1/8 to 1/4 turn. Return the diaphragm (key 12), spring seat and pusher post assembly to the body (key 1).

11. Set the relief valve spring (key 11) in the lower spring seat and place the upper spring seat (key 9) on the spring.

12. Put the spring case (key 2) over the spring (key 11) and onto the body (key 1). Tighten the cap screws (key 16) nger tight only.

13. To ensure proper slack in the diaphragm (key 12), apply some spring compression by turning the adjusting screw (key 15) or handwheel (key 38) clockwise. Finish tightening the cap screws. See Table 6 for recommended torque values.

Replacement or Maintenance of Bottom Plug O-ring

If there is any external leakage from the bottom plug, the bottom plug O-ring could be worn out or damaged. Proceed as follows to check and/or replace it.

1. Shut down the regulator. Refer to Shutdown section for the proper procedure.

2. Unscrew the bottom plug (key 5) from the body (key 1). Inspect the bottom plug seal (key 63) for damage. Replace the bottom plug seal if damage is noted. Lightly lubricate the bottom plug O-ring or graphite ring before installing it onto the bottom plug.

3. Reassemble the regulator in the reverse order of the above steps. When installing the bottom plug (key 5), coat the threads and sealing surface with anti-seize compound to ensure an adequate metal-to-metal seal. Reference Table 6 for proper torque values.

Disassembly to Replace Packing (For Types MR98LD, MR98HD, MR98HDP and MR98HHD)

Leakage around the adjusting screw may be caused by worn packing in the stu󰀩ng box. To check the packing, perform the following procedures.

1. Before returning the upper spring case (key 2) to the body (key 1), replace the packing (key 36) in the packing/stu󰀩ng box (key 32).

2. Take out the machine screw (key 41) and lift o󰀨 the washer (key 44) and handwheel (key 38).

3. Unscrew the packing/stu󰀩ng box (key 32). Unscrew the packing/stu󰀩ng box nut (key 35) and take it and the packing follower (key 34) o󰀨 of the adjusting screw (key 33).

4. Unscrew and pull the adjusting screw (key 33) out through the bottom of the packing/stu󰀩ng box (key 32).

5. Pull out the packing (key 36) and replace it. Replace the packing/stu󰀩ng box gasket (key 37).

MR98 Series

6. Reassemble the packing/stu󰀩ng box (key 32) unit by returning the adjusting screw (key 33) to the inside of the stu󰀩ng box. Slip the packing follower (key 34) onto the adjusting screw and into the stu󰀩ng box. Screw on the packing nut (key 35). See Table 6 for torque specications.

7. Put the packing/stu󰀩ng box (key 32) onto the spring case (key 2). Set the handwheel (key 38) and washer (key 44) on the adjusting screw (key 33) and screw in the machine screw (key 41).

8. Set the spring (key 11) and upper spring seat (key 9) over the lower spring seat (key 8). Place the spring case (key 2) on the body (key 1), tightening the cap screws (key 16) nger-tight only.

9. To ensure proper slack in the diaphragm (key 12), apply some spring compression by turning the adjusting screw (key 15) or handwheel (key 38) clockwise. Tighten the cap screws (key 16).

Parts Ordering

When corresponding with your local Sales O󰀩ce about this equipment, always reference the equipment serial number stamped on the nameplate.

When ordering replacement parts, specify the complete 11-character part number of each required 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, NACE MR0103 and/or NACE MR0175/ISO 15156.

Parts List

Key Description Part Number

Parts Kit (included are keys 3, 4, 12, 29, 59 and 63)

Types MR98H, MR98HD, MR98HH and MR98HDP

With Stainless steel diaphragm and trim

1/4 NPT Body Size RMR98HX0042 NPS 1/2 / DN 15 Body Size RMR98HX0052 NPS 3/4 and 1 / DN 20 and 25 Body Sizes RMR98HX0062 NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes RMR98HX0082

With Neoprene (CR) diaphragm and

Nitrile (NBR)/416 Stainless steel trim

1/4 NPT Body Size RMR98HX0012 NPS 1/2 / DN 15 Body Size RMR98HX0022 NPS 3/4 and 1 / DN 20 and 25 Body Sizes RMR98HX0032 NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes RMR98HX0072

Types MR98L and MR98LD

With Stainless steel diaphragm and plug

1/4 NPT Body Size RMR98LX0042 NPS 1/2 / DN 15 Body Size RMR98LX0052 NPS 3/4 and 1 / DN 20 and 25 Body Sizes RMR98LX0062

With Neoprene (CR) and

Nitrile (NBR)/Brass Disk

1/4 NPT Body Size RMR98LX0012 NPS 1/2 / DN 15 Body Size RMR98LX0022 NPS 3/4 and 1 / DN 20 and 25 Body Sizes RMR98LX0032

1 Body See Following Tables

2 Spring Case See Following Tables

3* Orifice

Metal-to-metal seat

1/4 NPT Body Size

416 Stainless steel GF04856X022 316 Stainless steel, NACE GF04856X032

Hastelloy® C, NACE GF04856X052 Monel®, NACE GF04856X042

NPS 1/2 / DN 15 Body Size

416 Stainless steel GF04841X022 316 Stainless steel, NACE GF04841X032 Alloy 6, NACE GF04841X062

Hastelloy® C, NACE GF04841X052 Monel®, NACE GF04841X042

NPS 3/4 and 1 / DN 20 and 25 Body Sizes

416 Stainless steel GF04821X022 316 Stainless steel, NACE GF04821X032 Alloy 6, NACE GF04821X062

Hastelloy® C, NACE GF04821X052 Monel®, NACE GF04821X042

*Recommended Spare Part

Monel® is a mark owned by Special Metals Corporation. Hastelloy® C is a mark owned by Haynes International, Inc.

MR98 Series

Key Description Part Number Key Description Part Number

3* Orifice (continued)

Metal-to-metal seat (continued)

NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes

416 Stainless steel GF04896X022 316 Stainless steel, NACE GF04896X032 Alloy 6, NACE GF04896X062

Hastelloy® C, NACE GF04896X052 Monel®, NACE GF04896X042

1/4 NPT Body Size

416 Stainless steel GF05036X022 316 Stainless steel, NACE, Oxygen Service GF05036X032

NPS 1/2 / DN 15 Body Size

416 Stainless steel GF05552X022 316 Stainless steel, NACE, Oxygen Service GF05552X032

Hastelloy® C, NACE GF05552X052

NPS 3/4 and 1 / DN 20 and 25 Body Sizes

416 Stainless steel GF04824X022 316 Stainless steel, NACE, Oxygen Service GF04824X032

Hastelloy® C, NACE GF04824X052

NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes

416 Stainless steel GF05513X022 316 Stainless steel, NACE, Oxygen Service GF05513X032

Hastelloy® C, NACE GF05513X052

4* Valve Plug See Following Tables

5 Bottom Plug

1/4 NPT Body Size

416 Stainless steel GF05500X022 316 Stainless steel, NACE, Oxygen Service GF05500X032

Hastelloy® C, NACE GF05500X052 Monel®, NACE GF05500X042

NPS 1/2 / DN 15 Body Size

416 Stainless steel GF05532X022 316 Stainless steel, NACE, Oxygen Service GF05532X032

Hastelloy® C, NACE GF05532X052 Monel®, NACE GF05532X042

NPS 3/4 and 1 / DN 20 and 25 Body Sizes

416 Stainless steel GF05496X022 316 Stainless steel, NACE, Oxygen Service GF05496X032

Hastelloy® C, NACE GF05496X052 Monel®, NACE GF05496X042

NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes

416 Stainless steel GF05511X022 316 Stainless steel, NACE, Oxygen Service GF05511X032

Hastelloy® C, NACE GF05511X052 Monel®, NACE GF05511X042

7 Valve Plug Guide

1/4 NPT Body Size

416 Stainless steel GF04882X022 316 Stainless steel, NACE, Oxygen Service GF04882X032

Hastelloy® C, NACE GF04882X052 Monel®, NACE GF04882X042

NPS 1/2 / DN 15 Body Size

416 Stainless steel GF05534X022 316 Stainless steel, NACE, Oxygen Service GF05534X032

Hastelloy® C, NACE GF05534X052 Monel®, NACE GF05534X042

NPS 3/4 and 1 / DN 20 and 25 Body Sizes

416 Stainless steel GF05529X022 316 Stainless steel, NACE, Oxygen Service GF05529X032

Hastelloy® C, NACE GF05529X052 Monel®, NACE GF05529X042

NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes

416 Stainless steel GF05539X022 316 Stainless steel, NACE, Oxygen Service GF05539X032

Hastelloy® C, NACE GF05539X052 Monel®, NACE GF05539X042

*Recommended Spare Part

1. Part meets NACE requirements only for applications in which the part is not exposed to sour gas.

Monel® is a mark owned by Special Metals Corporation. Hastelloy® C is a mark owned by Haynes International, Inc.

8 Lower Spring Seat, NACE

Types MR98L, MR98H, MR98LD,

MR98HD and MR98HDP

1/4 NPT Body Size

Aluminum

(1)

1L344609012

Stainless steel 1L3446X0012

NPS 1/2 / DN 15 Body Size

Aluminum

(1)

1L339708012

Stainless steel 1L3397X0012

NPS 3/4 and 1 / DN 20 and 25 Body Sizes

Aluminum

(1)

1L342708012

Stainless steel 1L3427X0012

NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes

(1)

Steel

1P787724152

Stainless steel 1P7877X0012

Types MR98HH, MR98HDP and MR98HHD

1/4 NPT Body Size

Aluminum

(1)

1N942009012

Stainless steel 1N9420X0012

NPS 1/2 / DN 15 Body Size

Aluminum

(1)

1N943024272

Stainless steel 1N9430X0012

NPS 3/4 and 1 / DN 20 and 25 Body Sizes

(1)

Steel

1N943824272

Stainless steel 1N9438X0012

9 Upper Spring Seat, NACE

Types MR98L, MR98H, MR98LD,

MR98HD and MR98HDP

1/4 NPT Body Size

(1)

Steel

ERCA00383A0

Stainless steel ERCA00383A1

NPS 1/2 / DN 15 Body Size

(1)

Steel

ERCA00823A0

Stainless steel ERCA00823A1

NPS 3/4 and 1 / DN 20 and 25 Body Sizes

(1)

Steel

1E398725072

Stainless steel 1E3987X0012

NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes

(1)

Steel

1P787624092

Stainless steel 1P7876X0012

Types MR98HH and MR98HHD

1/4 NPT Body Size

(1)

Steel

1N942124092

Stainless steel 1N9421X0012

NPS 1/2 / DN 15 Body Size

(1)

Steel

ERCA00430A0

Stainless steel ERCA00430A1

NPS 3/4 and 1 / DN 20 and 25 Body Sizes

(1)

Steel

1N943924092

Stainless steel 1N9439X0012

10 Pusher Post

Composition Diaphragm

1/4 NPT Body Size

416 Stainless steel 1L345635132 316 Stainless steel, NACE, Oxygen Service 1L345635072

Hastelloy® C, NACE 1L3456X0032 Monel®, NACE 1L3456X0022

NPS 1/2 / DN 15 Body Size

416 Stainless steel ERCA01344A0 316 Stainless steel, NACE, Oxygen Service ERCA01344A1

Hastelloy® C, NACE ERCA01344A3 Monel®, NACE ERCA01344A2

MR98 Series

Key Description Part Number Key Description Part Number

10 Pusher Post (continued)

Composition Diaphragm (continued)

NPS 3/4 and 1 / DN 20 and 25 Body Sizes

416 Stainless steel 1L343835132 316 Stainless steel, NACE, Oxygen Service 1L343835072

Hastelloy® C, NACE 1L3438X0012 Monel®, NACE 1L3438X0022

NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes

416 Stainless steel 1P788435132 316 Stainless steel, NACE, Oxygen Service 1P788435072

Hastelloy® C, NACE 1P7884X0012 Monel®, NACE 1P7884X0022

Metal Diaphragm

1/4 NPT Body Size

416 Stainless steel GF04910X022 316 Stainless steel, NACE, Oxygen Service GF04910X032

Hastelloy® C, NACE GF04910X052 Monel®, NACE GF04910X042

NPS 1/2 / DN 15 Body Size

416 Stainless steel ERCA01343A0 316 Stainless steel, NACE, Oxygen Service ERCA01343A1

Hastelloy® C, NACE ERCA01343A3 Monel®, NACE ERCA01343A2

NPS 3/4 and 1 / DN 20 and 25 Body Sizes

416 Stainless steel 1L343935132 316 Stainless steel, NACE, Oxygen Service 1L343935072

Hastelloy® C, NACE 1L343940152 Monel®, NACE 1L343940032

NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes

416 Stainless steel 1P788335132 316 Stainless steel, NACE, Oxygen Service 1P788335072

Hastelloy® C, NACE 1P7883X0012 Monel®, NACE 1P7883X00A2

11 Control Spring, NACE

(1)

See Table 3

12* Diaphragm See Following Tables

13 Nameplate - - - - - - - - - - -

14 Diaphragm Protector, PTFE, NACE

Types MR98L and MR98LD

1/4 NPT Body Size 11A5132X012 NPS 1/2 / DN 15 Body Size 11A5133X012 NPS 3/4 and 1 / DN 20 and 25 Body Sizes 11A5134X012

Types MR98H, MR98HD, MR98HH,

MR98HDP and MR98HHD

1/4 NPT Body Size 11A5135X012 NPS 1/2 / DN 15 Body Size 11A5136X012 NPS 3/4 and 1 / DN 20 and 25 Body Sizes 11A5137X012 NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes 11A5527X012

15 Adjusting Screw, NACE

(1)

Square Head Adjustment

1/4 NPT Body Size GF05533X012 NPS 1/2 / DN 15 Body Size

Types MR98L and MR98H GF05553X012 Type MR98HH ERAA02340A0

NPS 3/4 and 1 / DN 20 and 25 Body Sizes

Types MR98L and MR98H GF05543X012 Type MR98HH ERCA01483A0

NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes GF05522X012

Sealed Square Head Adjustment

NPS 1/2 / DN 15 Body Size GF05553X012 NPS 3/4 and 1 / DN 20 and 25 Body Sizes GF05543X012 NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes GF05522X012

15 Adjusting Screw, NACE

Stainless steel Square Head Adjustment

1/4 NPT Body Size GF05533X022 NPS 1/2 / DN 15 Body Size

Types MR98L and MR98H GF05553X022 Type MR98HH ERAA02340A1

NPS 3/4 and 1 / DN 20 and 25 Body Sizes

Types MR98L and MR98H GF05543X022 Type MR98HH ERCA01483A1

NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes GF05522X022

Handwheel

NPS 1/2 / DN 15 Body Size ERAA02331A0

16 Cap Screws, NACE

Types MR98L and MR98LD

1/4 NPT Body Size

Steel (10 required) ERCA00651A0 Stainless steel (10 required) ERCA00651A1

NPS 1/2 / DN 15 Body Size

Steel (10 required) ERCA00100A0 Stainless steel (10 required) ERCA00100A1

NPS 3/4 and 1 / DN 20 and 25 Body Sizes

Steel (12 required) GF05446X012 Stainless steel (12 required) GF05446X022

Types MR98H, MR98HD,

MR98HH and MR98HHD

1/4 NPT Body Size

Steel (6 required) ERCA04149A0 Stainless steel (6 required) ERCA04149A1 B8M Class 2 Stainless steel (6 required) ERCA04149A3

NPS 1/2 / DN 15 Body Size

Steel (8 required) ERCA00100A0 Stainless steel (8 required) ERCA00100A1

NPS 3/4 and 1 / DN 20 and 25 Body Sizes

Steel (8 required) GF05446X012 Stainless steel (8 required) GF05446X022

NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes

Steel (8 required) ERCA00601A0 Stainless steel (8 required) ERCA00601A3

Type MR95HDP

1/4 NPT Body Size

Steel (6 required) ERCA04149A2 Stainless steel (6 required) ERCA04149A3

NPS 1/2 / DN 15 Body Size

Steel (8 required) ERCA00100A2 Stainless steel (8 required) ERCA00100A3

NPS 3/4 and 1 / DN 20 and 25 Body Sizes

Steel (8 required) GF05446X032 Stainless steel (8 required) GF05446X042

NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes

Steel (8 required) ERCA00601A2 Stainless steel (8 required) ERCA00601A3

17 Jam Nut, NACE

Square Head Adjustment

1/4 NPT Body Size ERCA00652A0 NPS 1/2 / DN 15 Body Size ERCA00380A0 NPS 3/4 and 1 / DN 20 and 25 Body Sizes GF05453X012 NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes ERCA00633A0

Stainless steel Square Head Adjustment

1/4 NPT Body Size ERCA00652A1 NPS 1/2 / DN 15 Body Size ERCA00380A1 NPS 3/4 and 1 / DN 20 and 25 Body Sizes GF05453X022 NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes ERCA00633A1

(1)

(continued)

(1)

*Recommended Spare Part

1. Part meets NACE requirements only for applications in which the part is not exposed to sour gas.

Monel® is a mark owned by Special Metals Corporation. Hastelloy® C is a mark owned by Haynes International, Inc.

MR98 Series

Key Description Part Number Key Description Part Number

17 Jam Nut, NACE

Sealed Square Head Adjustment

NPS 1/2 / DN 15 Body Size ERCA00380A0 NPS 3/4 and 1 / DN 20 and 25 Body Sizes GF05453X012 NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes ERCA00633A0

Tee Handle Adjustment

1/4 NPT Body Size ERCA00652A0 NPS 3/4 and 1 / DN 20 and 25 Body Sizes GF05453X012 NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes ERCA00633A0

Handwheel Adjustment

NPS 1/2 / DN 15 Body Size ERCA00380A0

18 Drive Screw (4 required), NACE ERAA01884A0

19* Diaphragm Gasket (2 required for pressure

loaded spring case)

302 Stainless steel diaphragm

Types MR98L and MR98LD

1/4 NPT Body Size ERCA00655A0 NPS 1/2 / DN 15 Body Size ERCA00491A0 NPS 3/4 and 1 / DN 20 and 25 Body Sizes ERCA00556A0

Types MR98H, MR98HD, MR98HH,

MR98HDP and MR98HHD

1/4 NPT Body Size 1E393104022 NPS 1/2 / DN 15 Body Size ERCA00485A0 NPS 3/4 and 1 / DN 20 and 25 Body Sizes ERCA00510A0 NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes ERCA00526A0

302 Stainless steel - Oxygen Service diaphragm

Type MR98L

1/4 NPT Body Size ERCA00655A2 NPS 1/2 / DN 15 Body Size ERCA00491A2 NPS 3/4 and 1 / DN 20 and 25 Body Sizes ERCA00556A2

Types MR98H and MR98HH

1/4 NPT Body Size 1E3931X0022 NPS 1/2 / DN 15 Body Size ERCA00485A2 NPS 3/4 and 1 / DN 20 and 25 Body Sizes ERCA00510A2 NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes ERCA00526A2

302 Stainless steel - Steam Service, Monel®

and Hastelloy® C Diaphragms

Types MR98L and MR98LD

1/4 NPT Body Size ERCA00655A1 NPS 1/2 / DN 15 Body Size ERCA00491A1 NPS 3/4 and 1 / DN 20 and 25 Body Sizes ERCA00556A1

Types MR98H, MR98HD, MR98HH,

MR98HDP and MR98HHD

1/4 NPT Body Size 1E3931X0012 NPS 1/2 / DN 15 Body Size ERCA00485A1 NPS 3/4 and 1 / DN 20 and 25 Body Sizes ERCA00510A1 NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes ERCA00526A1

21 Diaphragm Head

1/4 NPT Body Size

Steel, NACE Stainless steel, NACE 1L3455X0012

NPS 1/2 / DN 15 Body Size

Steel, NACE Stainless steel, NACE 1L3396X0012

NPS 3/4 and 1 / DN 20 and 25 Body Sizes

Steel, NACE Stainless steel, NACE 1L3421X0012

NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes

(2 required)

416 Stainless steel ERCA00578A0 316 Stainless steel, NACE, Oxygen Service ERCA00578A1

Hastelloy® C, NACE ERCA00578A3 Monel®, NACE ERCA00578A2

(1)

(continued)

(1)

1L345525072

(1)

1L339625072

(1)

1L342125072

22 Adjusting Screw Assembly, NACE

Tee Handle Adjustment

1/4 NPT Body Size ERAA01707A0 NPS 3/4 and 1 / DN 20 and 25 Body Sizes ERAA01716A0 NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes ERAA01694A0

23 Handwheel, NACE, (NPS 1/2 / DN 15 Body) ERAA02088A0

24 Machine Screw

1/4 NPT Body Size

416 Stainless steel GF05033X012 316 Stainless steel, NACE, Oxygen Service GF05033X022

NPS 1/2 / DN 15 Body Size

416 Stainless steel 1J4159X0012 316 Stainless steel, NACE, Oxygen Service 1J4159X0012

Hastelloy® C, NACE 1J4159X0062

NPS 3/4 and 1 / DN 20 and 25 Body Sizes

416 Stainless steel 1L343538992 316 Stainless steel, NACE, Oxygen service 1L3435X0012

Hastelloy® C, NACE 1L3435X0052

NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes

416 Stainless steel 1P788638992 316 Stainless steel, NACE, Oxygen Service 1P788638992

Hastelloy® C, NACE 1P7886X0022

25 O-ring Retainer

1/4 NPT Body Size

416 Stainless steel GF05031X022 316 Stainless steel, NACE, Oxygen Service GF05031X032

NPS 1/2 / DN 15 Body Size

416 Stainless steel GF05078X022 316 Stainless steel, NACE, Oxygen Service GF05078X032

Hastelloy® C, NACE GF05078X052

NPS 3/4 and 1 / DN 20 and 25 Body Sizes

416 Stainless steel 1L343035132 316 Stainless steel, NACE, Oxygen Service 1L343035072

Hastelloy® C, NACE 1L3430X0022

25 Seat Retainer

NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes

416 Stainless steel ERCA00377A0 316 Stainless steel, NACE, Oxygen Service ERCA00377A1

Hastelloy® C, NACE ERCA00377A3

28 Lockwasher, NACE

(1)

1/4 NPT and NPS 1/2 / DN 15 Body Sizes

Steel ERAA01919A0 Stainless steel ERAA01919A1

NPS 3/4 and 1 / DN 20 and 25 Body Sizes

Steel 1H624328992 Stainless steel 1H6243X0012

NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes

Steel ERCA00379A0 Stainless steel ERCA00379A1

29* Gasket, NACE

Composition Diaphragm

1/4 NPT Body Size GF04913X012 NPS 1/2 / DN 15 Body Size ERAA02651A0 NPS 3/4 and 1 / DN 20 and 25 Body Sizes ERCA00502A0

Metal Diaphragm

1/4 NPT Body Size (2 required for pressure

loaded spring case)

302 Stainless steel GF04913X012 302 Stainless steel - Oxygen Service GF04913X032 302 Stainless steel - Steam Service, Monel

and Hastelloy® C GF04913X022

*Recommended Spare Part

1. Part meets NACE requirements only for applications in which the part is not exposed to sour gas.

Monel® is a mark owned by Special Metals Corporation. Hastelloy® C is a mark owned by Haynes International, Inc.

MR98 Series

Key Description Part Number Key Description Part Number

29* Gasket, NACE (continued)

Metal Diaphragm (continued)

NPS 1/2 / DN 15 Body Size (2 required for

pressure loaded spring case)

302 Stainless steel ERAA02651A0 302 Stainless steel - Oxygen Service ERAA02651A2 302 Stainless steel - Steam Service, Monel

and Hastelloy® C ERAA02651A1

NPS 3/4 and 1 / DN 20 and 25 Body Sizes

(2 required for pressure loaded spring case)

302 Stainless steel ERCA00502A0 302 Stainless steel - Oxygen Service ERCA00502A2 302 Stainless steel - Steam Service, Monel

and Hastelloy® C ERCA00502A1

NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes

(2 required)

302 Stainless steel ERCA00579A0 302 Stainless steel - Oxygen Service ERCA00579A2 302 Stainless steel - Steam Service, Monel

and Hastelloy® C ERCA00579A1

31 Locknut, NACE

(1)

1/4 NPT and NPS 1/2 / DN 15 Body Sizes ERCA00663A0 NPS 3/4 and 1 / DN 20 and 25 Body Sizes 1L872224122 NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes 1P788724122

32 Stuffing Box

Handwheel adjustment

Types MR98LD, MR98HD and MR98HDP

1/4 NPT Body Size ERAA02699A0 NPS 1/2 / DN 15 Body Size ERAA01655A0 NPS 3/4 and 1 / DN 20 and 25 Body Sizes ERAA01655A0 NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes ERAA01662A0

Type MR98HHD

1/4 NPT Body Size ERAA02699A0 NPS 1/2 / DN 15 Body Size ERAA02700A0 NPS 3/4 and 1 / DN 20 and 25 Body Sizes ERAA02696A0

Handwheel adjustment with Stainless steel Trim

Types MR98LD, MR98HD and MR98HDP

1/4 NPT Body Size ERAA02699A1 NPS 1/2 / DN 15 Body Size ERAA01655A1 NPS 3/4 and 1 / DN 20 and 25 Body Sizes ERAA01655A1 NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes ERAA01662A1

Type MR98HHD

1/4 NPT Body Size ERAA02699A1 NPS 1/2 / DN 15 Body Size ERAA02700A1 NPS 3/4 and 1 / DN 20 and 25 Body Sizes ERAA02696A1

33 Adjusting Screw

Types MR98LD, MR98HD and MR98HDP

1/4 NPT Body Size ERAA01631A0 NPS 1/2 / DN 15 Body Size ERAA02333A0 NPS 3/4 and 1 / DN 20 and 25 Body Sizes ERAA01673A0 NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes ERAA01677A0

Type MR98HHD

1/4 NPT Body Size ERAA01631A0 NPS 1/2 / DN 15 Body Size ERAA01874A0 NPS 3/4 and 1 / DN 20 and 25 Body Sizes ERAA02107A0

34 Packing Follower

Handwheel adjustment

Types MR98LD, MR98HD and MR98HDP

1/4 NPT Body Size ERAA01632A0 NPS 1/2 to 2 / DN 15 to 50 Body Sizes 1K884924092

34 Packing Follower (continued)

Handwheel adjustment (continued)

Type MR98HHD

1/4 NPT and NPS 1/2 / DN 15 Body Sizes ERAA01632A0 NPS 3/4 and 1 / DN 20 and 25 Body Sizes 1P144024092

Handwheel adjustment with Stainless steel trim

Types MR98LD, MR98HD and MR98HDP

1/4 NPT Body Size ERAA01632A0 NPS 1/2 to 2 / DN 15 to 50 Body Sizes 1K8849X0012

Type MR98HHD

1/4 NPT and NPS 1/2 / DN 15 Body Sizes ERAA01632A0 NPS 3/4 and 1 / DN 20 and 25 Body Sizes 1P1440X0012

35 Stuffing Box Nut

Handwheel adjustment

Types MR98LD, MR98HD and MR98HDP ERAA01633A0

Type MR98HHD

1/4 NPT and NPS 1/2 / DN 15 Body Sizes ERAA01633A0 NPS 3/4 and 1 / DN 20 and 25 Body Sizes 1P144124092

Handwheel adjustment with Stainless steel trim

Types MR98LD, MR98HD and MR98HDP ERAA01633A1

Type MR98HHD

1/4 NPT and NPS 1/2 / DN 15 Body Sizes ERAA01633A1 NPS 3/4 and 1 / DN 20 and 25 Body Sizes 1P1441X0012

36 Packing V-Ring (3 required)

Types MR98LD, MR98HD and MR98HDP

1/4 NPT Body Size ERAA01634A0 NPS 1/2 to 2 / DN 15 to 50 Body Sizes ERAA01657A0

Type MR98HHD

1/4 NPT Body Size ERAA01634A0 NPS 1/2 / DN 15 Body Size ERAA01657A0 NPS 3/4 and 1 / DN 20 and 25 Body Sizes ERAA02108A0

37* Stuff Box Gasket

1/4 NPT Body Size ERAA01635A0 NPS 1/2 to 2 / DN 15 to 50 Body Sizes 1P494106242

38 Handwheel / Handle

Handwheel adjustment

Types MR98LD, MR98HD and MR98HDP

1/4 NPT Body Size ERAA01636A0 NPS 1/2 / DN 15 Body Size ERAA01669A0 NPS 3/4 and 1 / DN 20 and 25 Body Sizes ERAA01669A0 NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes 1J410819042

Type MR98HHD

1/4 NPT Body Size ERAA01636A0 NPS 1/2 / DN 15 Body Size ERAA01669A0 NPS 3/4 and 1 / DN 20 and 25 Body Sizes ERAA02109A0

Handwheel adjustment with Stainless steel Trim

Types MR98LD and MR98HD

1/4 NPT Body Size ERAA02956A1 NPS 1/2 / DN 15 Body Size ERAA02957A1 NPS 3/4 and 1 / DN 20 and 25 Body Sizes ERAA02957A1 NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes ERAA02959A1

Type MR98HHD

1/4 NPT Body Size ERAA02956A1 NPS 1/2 / DN 15 Body Size ERAA02957A1 NPS 3/4 and 1 / DN 20 and 25 Body Sizes ERAA02958A1

39 Internal Adaptor

Types MR98LD, MR98HD and MR98HDP

1/4 NPT Body Size ERAA01637A0 NPS 1/2 to 2 / DN 15 to 50 Body Sizes ERAA01666A0

*Recommended Spare Part

1. Part meets NACE requirements only for applications in which the part is not exposed to sour gas.

Monel® is a mark owned by Special Metals Corporation. Hastelloy® C is a mark owned by Haynes International, Inc.

MR98 Series

Key Description Part Number Key Description Part Number

39 Internal Adaptor (continued)

Type MR98HHD

1/4 NPT Body Size ERAA01637A0 NPS 1/2 / DN 15 Body Size ERAA01666A0 NPS 3/4 and 1 / DN 20 and 25 Body Sizes ERAA02111A0

40 External Adaptor

Types MR98LD, MR98HD and MR98HDP

1/4 NPT Body Size ERAA01638A0 NPS 1/2 to 2 / DN 15 to 50 Body Sizes ERAA01667A0

Type MR98HHD

1/4 NPT Body Size ERAA01638A0 NPS 1/2 / DN 15 Body Size ERAA01667A0 NPS 3/4 and 1 / DN 20 and 25 Body Sizes ERAA02112A0

41 Machine Screw

Handwheel adjustment

1/4 NPT Body Size ERAA01639A0 NPS 1/2 / DN 15 Body Size ERAA01670A0 NPS 3/4 and 1 / DN 20 and 25 Body Sizes ERAA01670A0

Handwheel adjustment with Stainless steel Trim

1/4 NPT Body Size ERAA01639A1 NPS 1/2 / DN 15 Body Size ERAA01670A1 NPS 3/4 and 1 / DN 20 and 25 Body Sizes ERAA01670A1

41 Jam Nut

NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes

Handwheel ERAA01688A0 Handwheel adjustment with

Stainless steel Trim ERAA01688A1

42 Spring

Types MR98LD, MR98HD and MR98HDP ERAA01640A0

Type MR98HHD

1/4 NPT and NPS 1/2 / DN 15 Body Sizes ERAA01640A0 NPS 3/4 and 1 / DN 20 and 25 Body Sizes ERAA02110A0

43 Washer

Types MR98LD, MR98HD and MR98HDP

1/4 NPT Body Size ERAA01641A0 NPS 1/2 to 2 / DN 15 to 50 Body Sizes ERAA01660A0

Type MR98HHD

1/4 NPT Body Size ERAA01641A0 NPS 1/2 / DN 15 Body Size ERAA01660A0 NPS 3/4 and 1 / DN 20 and 25 Body Sizes 1H941736042

44 Washer

Handwheel adjustment

1/4 NPT Body Size ERAA01642A0 NPS 1/2 / DN 15 Body Size ERAA01671A0 NPS 3/4 and 1 / DN 20 and 25 Body Sizes ERAA01671A0 NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes ERAA01689A0

Handwheel adjustment with Stainless steel Trim

1/4 NPT Body Size ERAA01642A1 NPS 1/2 / DN 15 Body Size ERAA01671A1 NPS 3/4 and 1 / DN 20 and 25 Body Sizes ERAA01671A1 NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes ERAA01689A1

45* O-ring

1/4 NPT Body Size

Nitrile (NBR) ERAA01672A0 Fluorocarbon (FKM) ERAA01672A1 Ethylene Propylene (EPDM) ERAA01672A2

NPS 1/2 / DN 15 Body Size

Nitrile (NBR) ERAA01672A0 Fluorocarbon (FKM) ERAA01672A1 Ethylene Propylene (EPDM) ERAA01672A2

45* O-ring (continued)

NPS 3/4 and 1 / DN 20 and 25 Body Sizes

Nitrile (NBR) ERAA02070A0

NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes

Nitrile (NBR) ERCA00664A0 Fluorocarbon (FKM) ERCA00664A1 Ethylene Propylene (EPDM) ERCA00664A2

47 NACE Tag - - - - - - - - - - -

48 Tag Wire - - - - - - - - - - -

49 Lockwasher, For Types MR98HD and MR98HDP

NPS 3/4 and 1 / DN 20 and 25 Body Sizes

Steel ERCA00379A0 Stainless steel ERCA00379A1

50* Sealing Washer

NPS 1/2 / DN 15 Body Size 1V205699012 NPS 3/4 and 1 / DN 20 and 25 Body Sizes 11A9681X012 NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes 1V424699012

51 Vent

Type MR98HH

1/4 NPT Body 0L078343062 NPS 1/2 to 1 / DN 15 to 25 Body Sizes ERAA02123A0

Type MR98H

NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes ERAA02123A0

52 Plug, NPS 1/2 to 2 / DN 15 to 50 Body Sizes ERAA01942A0

53* Valve Plug O-ring

NPS 1/2 / DN 15 Body Size

Ethylene Propylene (EPDM) ERCA02968A2 Fluorocarbon (FKM) ERCA02968A1 Perfluoroelastomer (FFKM) ERCA02968A3 Nitrile (NBR) ERCA02968A0

NPS 3/4 and 1 / DN 20 and 25 Body Sizes

Ethylene Propylene (EPDM) ERCA00973A2 Fluorocarbon (FKM) ERCA00973A1 Perfluoroelastomer (FFKM) ERCA00973A3 Nitrile (NBR) ERCA00973A0

NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes

Ethylene Propylene (EPDM) ERCA01406A2 Fluorocarbon (FKM) ERCA01406A1 Perfluoroelastomer (FFKM) ERCA01406A3 Nitrile (NBR) ERCA01406A0

57 Jam Nut, Type MR98HHD,

NPS 3/4 and 1 / DN 20 and 25 Body Sizes

Handwheel adjustment ERCA00380A0 Handwheel adjustment with

Stainless steel Trim ERCA00380A1

58 Washer

1/4 NPT Body Size

416 Stainless steel GF05050X012 316 Stainless steel, NACE, Oxygen Service GF05050X022

Hastelloy® C, NACE GF05050X032 Monel®, NACE GF05050X042

NPS 1/2 / DN 15 Body Size

416 Stainless steel GF05050X012 316 Stainless steel, NACE, Oxygen Service GF05050X022

Hastelloy® C, NACE GF05050X042 Monel®, NACE GF05050X032

NPS 3/4 and 1 / DN 20 and 25 Body Sizes

416 Stainless steel GF05525X012 316 Stainless steel, NACE, Oxygen Service GF05525X022

Hastelloy® C, NACE GF05525X042 Monel®, NACE GF05525X032

*Recommended Spare Part

Monel® is a mark owned by Special Metals Corporation. Hastelloy® C is a mark owned by Haynes International, Inc.

MR98 Series

Key Description Part Number Key Description Part Number

59* O-ring

1/4 NPT Body Size

Nitrile (NBR) seat ERCA02967A0 Fluorocarbon (FKM) seat ERCA02967A1 Ethylene Propylene (EPDM) seat ERCA02967A2

NPS 1/2 / DN 15 Body Size

Nitrile (NBR) seat ERCA02974A0 Fluorocarbon (FKM) seat ERCA02974A1 Ethylene Propylene (EPDM) seat ERCA02974A2 Perfluoroelastomer (FFKM) seat ERCA02974A3

NPS 3/4 and 1 / DN 20 and 25 Body Sizes

Nitrile (NBR) seat ERCA00974A0 Fluorocarbon (FKM) seat ERCA00974A1 Ethylene Propylene (EPDM) seat ERCA00974A2 Perfluoroelastomer (FFKM) seat ERCA00974A3

59* L-ring

NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes

Nitrile (NBR) seat ERCA00668A1 Fluorocarbon (FKM) seat ERCA00668A2 Ethylene Propylene (EPDM) seat ERCA00668A3 Perfluoroelastomer (FFKM) seat ERCA00668A5

62 Adaptor, NACE

Types MR98L and MR98LD,

NPS 3/4 and 1 / DN 20 and 25 Body Sizes ERAA01930A0

63* Bottom Plug Seal

1/4 NPT Body Size

Nitrile (NBR) ERCA03017A0 Perfluoroelastomer (FFKM) ERCA03017A3 Fluorocarbon (FKM) ERCA03017A1 Ethylenepropylene (EPDM) ERCA03017A2 Graphite ERCA02976A0

NPS 1/2 / DN 15 Body Size

Nitrile (NBR) ERCA03016A0 Fluorocarbon (FKM) ERCA03016A1 Ethylenepropylene (EPDM) ERCA03016A2 Graphite ERCA02978A0

NPS 3/4 and 1 / DN 20 and 25 Body Sizes

Nitrile (NBR) ERCA00628A0 Perfluoroelastomer (FFKM) ERCA00628A3 Fluorocarbon (FKM) ERCA00628A1 Ethylenepropylene (EPDM) ERCA00628A2 Graphite ERCA00517A0

63* Bottom Plug Seal (continued)

NPS 1-1/2 and 2 / DN 40 and 50 Body Sizes

Nitrile (NBR) ERCA00630A0 Fluorocarbon (FKM) ERCA00630A1 Ethylenepropylene (EPDM) ERCA00630A2 Graphite ERCA01407A0

64 Flow Arrow - - - - - - - - - - -

65 Pipe Plug

NPS 3/4 to 2 / DN 20 to 50 Body Sizes

Steel ERAA03130A0 Stainless steel ERAA03131A0

66 Pressure Gauge

NPS 3/4 to 2 / DN 20 to 50 Body Sizes

0 to 15 psig / 0 to 1.0 bar

Brass 11B8579X012

Stainless steel ERAA03132A0

0 to 30 psig / 0 to 2.1 bar

Brass 11B8579X022

Stainless steel ERAA03132A1

0 to 60 psig / 0 to 4.1 bar

Brass 11B8579X032

Stainless steel ERAA03132A2

0 to 160 psig / 0 to 11.0 bar

Brass 11B8579X042 Stainless steel ERAA03132A3

0 to 300 psig / 0 to 20.7 bar

Brass 11B8579X052

Stainless steel ERAA03132A4

0 to 1000 psig / 0 to 68.9 bar

Brass 11B8579X102

Stainless steel ERAA03132A5

68 Restriction, NACE

Types MR98HH and MR98HHD,

NPS 3/4 and 1 / DN 20 and 25 Body Sizes ERAA03257A0

69 ATEX Tag - - - - - - - - - - -

70 PED Tag - - - - - - - - - - -

*Recommended Spare Part

Monel® is a mark owned by Special Metals Corporation. Hastelloy® C is a mark owned by Haynes International, Inc.

MR98 Series

Key 1, Types MR98L and MR98LD Body Part Numbers

BODY SIZE

1/4 NPT NPT ERCA03713A0 ERCA03713A1 ERCA03713A7 ERCA03713A4 ERCA03713A3 - - - - - - - - - - - - - - - - - - - - - -

NPS 1/2 / DN 15

Without Control Line

NPS 1/2 / DN 15

With Control Line

NPS 3/4 / DN 20

Without Gauge Port

and Control Line

NPS 3/4 / DN 20

With Control Line but

Without Gauge Port

NPS 3/4 / DN 20

With Gauge Port but Without Control Line

NPS 1 / DN 25

Without Gauge Port

and Control Line

NPS 1 / DN 25

With Control Line but

Without Gauge Port

NPS 1 / DN 25

With Gauge Port but Without Control Line

1. Meets the chemical and physical requirements of NACE MR0175-2002, NACE MR0103 and NACE MR0175/ISO 15156.

NOTE: Contact your local Sales O󰀩ce if additional gauge and control line options are needed.

END CONNECTION

STYLE

NPT ERCA03819A0 ERCA03819A1 ERCA03819A7 ERCA03819A4 ERCA03819A3 ERCA03819A9 ERCA03819B1

SWE - - - - - - - - - - - ERAA01848A0 ERAA01848A4 ERAA01848A2 ERAA01848A1 - - - - - - - - - - - - - - - - - - - - - -

Welded CL150 RF - - - - - - - - - - - ERAA01830A0 ERAA01830A3 ERAA01830A2 ERAA01830A1 - - - - - - - - - - - - - - - - - - - - - -

Welded CL300 RF - - - - - - - - - - - ERAA01832A0 ERAA01832A3 ERAA01832A2 ERAA01832A1 - - - - - - - - - - - - - - - - - - - - - -

Welded PN 16/25/40 RF - - - - - - - - - - - ERAA01834A0 ERAA01834A2 - - - - - - - - - - - ERAA01834A1 - - - - - - - - - - - - - - - - - - - - - -

NPT - - - - - - - - - - - ERAA01932A1 ERAA01932A4 ERAA01932A3 ERAA01932A2 - - - - - - - - - - - - - - - - - - - - - -

NPT ERCA01384A0 ERCA01384A1 ERCA01384A7 ERCA01384A4 ERCA01384A3 ERCA01384A9 ERCA01384B1

SWE - - - - - - - - - - - ERAA01785A1 ERAA01785A6 ERAA01785A4 ERAA01785A3 - - - - - - - - - - - - - - - - - - - - - -

Welded CL150 RF - - - - - - - - - - - ERAA01797A0 ERAA01797A3 ERAA01797A2 ERAA01797A1 - - - - - - - - - - - - - - - - - - - - - -

Welded CL300 RF - - - - - - - - - - - ERAA01799A0 ERAA01799A3 ERAA01799A2 ERAA01799A1 - - - - - - - - - - - - - - - - - - - - - -

Welded PN 16/25/40 RF - - - - - - - - - - - ERAA01801A0 ERAA01801A2 - - - - - - - - - - - ERAA01801A1 - - - - - - - - - - - - - - - - - - - - - -

NPT - - - - - - - - - - - ERAA02175A1 ERAA02175A4 ERAA02175A3 ERAA02175A2 - - - - - - - - - - - - - - - - - - - - - -

NPT ERAA02176A0 ERAA02176A1 ERAA02176A4 ERAA02176A3 ERAA02176A2 - - - - - - - - - - - - - - - - - - - - - -

Welded CL150 RF - - - - - - - - - - - ERAA02177A1 ERAA02177A4 ERAA02177A3 ERAA02177A2 - - - - - - - - - - - - - - - - - - - - - -

Welded CL300 RF - - - - - - - - - - - ERAA02178A1 ERAA02178A4 ERAA02178A3 ERAA02178A2 - - - - - - - - - - - - - - - - - - - - - -

Welded PN 16/25/40 RF - - - - - - - - - - - ERAA02179A1 ERAA02179A3 - - - - - - - - - - - ERAA02179A2 - - - - - - - - - - - - - - - - - - - - - -

NPT ERCA03676A0 ERCA03676A1 ERCA03676A7 ERCA03676A4 ERCA03676A3 ERCA03676A9 ERCA03676B1

SWE - - - - - - - - - - - ERAA01787A1 ERAA01787A6 ERAA01787A4 ERAA01787A3 - - - - - - - - - - - - - - - - - - - - - -

Welded CL150 RF - - - - - - - - - - - ERAA01803A0 ERAA01803A3 ERAA01803A2 ERAA01803A1 - - - - - - - - - - - - - - - - - - - - - -

Welded CL300 RF - - - - - - - - - - - ERAA01805A0 ERAA01805A3 ERAA01805A2 ERAA01805A1 - - - - - - - - - - - - - - - - - - - - - -

Welded PN 16/25/40 RF - - - - - - - - - - - ERCA00553A0 ERCA00553A2 - - - - - - - - - - - ERCA00553A1 - - - - - - - - - - - - - - - - - - - - - -

NPT - - - - - - - - - - - ERAA02218A1 ERAA02218A4 ERAA02218A3 ERAA02218A2 - - - - - - - - - - - - - - - - - - - - - -

NPT ERAA02219A0 ERAA02219A1 ERAA02219A4 ERAA02219A3 ERAA02219A2 - - - - - - - - - - - - - - - - - - - - - -

Welded CL150 RF - - - - - - - - - - - ERAA02220A1 ERAA02220A4 ERAA02220A3 ERAA02220A2 - - - - - - - - - - - - - - - - - - - - - -

Welded CL300 RF - - - - - - - - - - - ERAA02221A1 ERAA02221A4 ERAA02221A3 ERAA02221A2 - - - - - - - - - - - - - - - - - - - - - -

Welded PN 16/25/40 RF - - - - - - - - - - - ERAA02222A1 ERAA02222A3 - - - - - - - - - - - ERAA02222A2 - - - - - - - - - - - - - - - - - - - - - -

Gray Cast Iron WCC Steel

(1)

LCC Steel

BODY MATERIAL

(1)

Stainless

Steel

CF8M

CF3M

(1)

Stainless

(1)

Steel

Monel

®(1)

Hastelloy® C

(1)

Monel® is a mark owned by Special Metals Corporation. Hastelloy® C is a mark owned by Haynes International, Inc.

- continued -

MR98 Series

Key 1, Types MR98H, MR98HD, MR98HDP, MR98HH and MR98HHD Body Part Numbers (continued)

BODY SIZE

1/4 NPT NPT ERCA03697A0 ERCA03697A1 ERCA03697A7 ERCA03697A4 ERCA03697A3 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

NPS 1/2 / DN 15

Without

Control Line

NPS 1/2 / DN 15

With Control Line

NPS 3/4 / DN 20

Without Gauge

Port and

Control Line

NPS 3/4 / DN 20

With Control

Line but Without

Gauge Port

NPS 3/4 / DN 20

With Gauge

Port but Without

Control Line

NPS 1 / DN 25

Without Gauge

Port and

Control Line

NPS 1 / DN 25

With Control

Line but Without

Gauge Port

NPS 1 / DN 25

With Gauge

Port but Without

Control Line

1. Meets the chemical and physical requirements of NACE MR0175-2002, NACE MR0103 and NACE MR0175/ISO 15156.

2. Available for Types MR98H, MR98HD and MR98HDP only.

NOTE: Contact your local Sales O󰀩ce if additional gauge and control line options are needed.

END

CONNECTION

STYLE

NPT ERCA03818A0 ERCA03818A1 ERCA03818A7 ERCA03818A4 ERCA03818A3 ERCA03818A9 ERCA03818B1 - - - - - - - - - - -

SWE - - - - - - - - - - - ERAA01829A0 ERAA01829A4 ERAA01829A2 ERAA01829A1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded CL150 RF - - - - - - - - - - - ERAA01831A0 ERAA01831A3 ERAA01831A2 ERAA01831A1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded CL300 RF - - - - - - - - - - - ERAA01833A0 ERAA01833A3 ERAA01833A2 ERAA01833A1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded

PN 16/25/40 RF

Integral CL150 RF - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ERAA02400A0 ERAA02400A1 ERAA02400A2 ERAA02400A3

Integral CL300 RF - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ERAA02401A0 ERAA02401A1 ERAA02401A2 ERAA02401A3

Integral

PN 16/25/40 RF

NPT - - - - - - - - - - - ERAA01934A1 ERAA01934A4 ERAA01934A3 ERAA01934A2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded CL150 RF - - - - - - - - - - - ERAA01936A0 ERAA01936A3 ERAA01936A2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded CL300 RF - - - - - - - - - - - ERAA01937A0 ERAA01937A3 ERAA01937A2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

NPT ERCA01383A0 ERCA01383A1 ERCA01383A7 ERCA01383A4 ERCA01383A3 ERCA01383A9 ERCA01383B1 - - - - - - - - - - -

SWE - - - - - - - - - - - ERAA01786A1 ERAA01786A6 ERAA01786A4 ERCA01786A3 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded CL150 RF - - - - - - - - - - - ERAA01798A0 ERAA01798A3 ERAA01798A2 ERAA01798A1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded CL300 RF - - - - - - - - - - - ERAA01800A0 ERAA01800A3 ERAA01800A2 ERAA01800A1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded

PN 16/25/40 RF

NPT - - - - - - - - - - - ERAA02211A1 ERAA02211A4 ERAA02211A3 ERAA02211A2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded CL150 RF - - - - - - - - - - - ERAA02477A0 ERAA02477A3 ERAA02477A2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded CL300 RF - - - - - - - - - - - ERAA02478A0 ERAA02478A3 ERAA02478A2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

NPT ERAA02212A0 ERAA02212A1 ERAA02212A4 ERAA02212A3 ERAA02212A2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded CL150 RF - - - - - - - - - - - ERAA02215A1 ERAA02215A4 ERAA02215A3 ERAA02215A2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded CL300 RF - - - - - - - - - - - ERAA02216A1 ERAA02216A4 ERAA02216A3 ERAA02216A2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded

PN 16/25/40 RF

NPT ERCA03673A0 ERCA03673A1 ERCA03673A7 ERCA03673A4 ERCA03673A3 ERCA03673A9 ERCA03673B1 - - - - - - - - - - -

SWE - - - - - - - - - - - ERAA01788A1 ERAA01788A6 ERAA01788A4 ERAA01788A3 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded CL150 RF - - - - - - - - - - - ERAA01804A0 ERAA01804A3 ERAA01804A2 ERAA01804A1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded CL300 RF - - - - - - - - - - - ERAA01806A0 ERAA01806A3 ERAA01806A2 ERAA01806A1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded

PN 16/25/40 RF

Integral CL150 RF - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ERAA01792A0 ERAA01792A4 ERAA01792A5 ERAA01792A6

Integral CL300 RF - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ERCA04332A2 ERCA04332A4 ERCA04332A5 ERCA04332A6

Integral

PN 16/25/40 RF

NPT - - - - - - - - - - - ERAA02214A1 ERAA02214A4 ERAA02214A3 ERAA02214A2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded CL150 RF - - - - - - - - - - - ERAA02479A0 ERAA02479A3 ERAA02479A2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded CL300 RF - - - - - - - - - - - ERAA02480A0 ERAA02480A3 ERAA02480A2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

NPT ERAA02213A0 ERAA02213A1 ERAA02213A4 ERAA02213A3 ERAA02213A2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded CL150 RF

Welded CL300 RF - - - - - - - - - - - ERAA02224A1 ERAA02224A4 ERAA02224A3 ERAA02224A2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded

PN 16/25/40 RF

Gray Cast

(2)

Iron

- - - - - - - - - - - ERAA01835A0 ERAA01835A2 - - - - - - - - - - - ERAA01835A1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ERAA02419A0 ERAA02419A1 ERAA02419A2 ERAA02419A3

- - - - - - - - - - - ERAA01802A0 ERAA01802A2 - - - - - - - - - - - ERAA01802A1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - ERAA02217A1 ERAA02217A3 - - - - - - - - - - - ERAA02217A2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - ERAA01793A0 ERAA01793A2 - - - - - - - - - - - ERAA01793A1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ERAA01794A2 ERAA01794A4 ERAA01794A5 ERAA01794A6

- - - - - - - - - - - ERAA02223A1 ERAA02223A4 ERAA02223A3 ERAA02223A2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - ERAA02225A1 ERAA02225A3 - - - - - - - - - - - ERAA02225A2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

WCC Steel

(1)

LCC Steel

(1)

BODY MATERIAL

CF8M

Stainless

(1)

Steel

CF3M

Stainless

(1)

Steel

Monel

®(1)

Hastelloy® C

(1)

Aluminum-

Bronze

Monel® is a mark owned by Special Metals Corporation. Hastelloy® C is a mark owned by Haynes International, Inc.

- continued -

MR98 Series

Key 1, Types MR98H, MR98HD and MR98HDP Body Part Numbers (continued)

BODY MATERIAL

CF8M

Stainless

(1)

Steel

BODY SIZE

END

CONNECTION

STYLE

Gray Cast

Iron

WCC Steel

(1)

LCC Steel

(1)

NPT ERCA01385A0 ERCA01385A1 ERCA01385A7 ERCA01385A3 ERCA01385A2 ERCA01385A4 ERCA01385A9 - - - - - - - - - - -

NPS 1-1/2 / DN 40

Without Gauge

Port and

Control Line

NPS 1-1/2 / DN 40

With Control Line

but Without Gauge Port

NPS 1-1/2 / DN 40

With Gauge Port

but Without

Control Line

SWE - - - - - - - - - - - ERAA01795A0 ERAA01795A4 ERAA01795A2 ERAA01795A1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded CL150 RF - - - - - - - - - - - ERAA01770A0 ERAA01770A3 ERAA01770A2 ERAA01770A1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded CL300 RF - - - - - - - - - - - ERAA01771A0 ERAA01771A3 ERAA01771A2 ERAA01771A1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded

PN16/25/40 RF

- - - - - - - - - - - ERAA01772A0 ERAA01772A2 - - - - - - - - - - - ERAA01772A1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

NPT - - - - - - - - - - - ERAA01944A1 ERAA01944A4 ERAA01944A3 ERAA01944A2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded CL150 RF - - - - - - - - - - - ERAA01948A0 ERAA01948A3 ERAA01948A2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded CL300 RF - - - - - - - - - - - ERAA01949A0 ERAA01949A3 ERAA01949A2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

NPT ERAA02511A0 ERAA02511A1 ERAA02511A4 ERAA02511A3 ERAA02511A2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded CL150 RF - - - - - - - - - - - ERAA02502A0 ERAA02502A3 ERAA02502A2 ERAA02502A1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded CL300 RF - - - - - - - - - - - ERAA02503A0 ERAA02503A3 ERAA02503A2 ERAA02503A1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded

PN 16/25/40 RF

- - - - - - - - - - - ERAA02504A0 ERAA02504A2 - - - - - - - - - - - ERAA02504A1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

NPT ERCA03767A0 ERCA03767A1 ERCA03767A7 ERCA03767A4 ERCA03767A3 ERCA03767A9 ERCA03767B1 - - - - - - - - - - -

SWE - - - - - - - - - - - ERAA01796A0 ERAA01796A4 ERAA01796A2 ERAA01796A1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded CL150 RF - - - - - - - - - - - ERAA01773A0 ERAA01773A3 ERAA01773A2 ERAA01773A1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

NPS 2 / DN 50

Without Gauge

Port and

Control Line

Welded CL300 RF - - - - - - - - - - - ERAA01774A0 ERAA01774A3 ERAA01774A2 ERAA01774A1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded

PN 16/25/40 RF

- - - - - - - - - - - ERAA01775A0 ERAA01775A2 - - - - - - - - - - - ERAA01775A1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Integral CL150 RF - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ERAA01781A0 ERAA01781A1 ERAA01781A2 ERAA01781A3

Integral CL300 RF - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ERCA04258A0 ERCA04258A1 ERCA04258A2 ERCA04258A3

Integral

PN 16/25/40 RF

NPS 2 / DN 50

With Control Line

but Without Gauge Port

NPS 2 / DN 50

With Gauge Port

but Without

Control Line

1. Meets the chemical and physical requirements of NACE MR0175-2002, NACE MR0103 and NACE MR0175/ISO 15156.

NOTE: Contact your local Sales O󰀩ce if additional gauge and control line options are needed.

NPT - - - - - - - - - - - ERAA01945A1 ERAA01945A4 ERAA01945A3 ERAA01945A2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded CL150 RF - - - - - - - - - - - ERAA01951A0 ERAA01951A3 ERAA01951A2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded CL300 RF - - - - - - - - - - - ERAA01952A0 ERAA01952A3 ERAA01952A2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

NPT ERAA02512A0 ERAA02512A1 ERAA02512A4 ERAA02512A3 ERAA02512A2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded CL150 RF - - - - - - - - - - - ERAA02505A0 ERAA02505A3 ERAA02505A2 ERAA02505A1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded CL300 RF - - - - - - - - - - - ERAA02506A0 ERAA02506A3 ERAA02506A2 ERAA02506A1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Welded

PN 16/25/40 RF

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ERAA01782A0 ERAA01782A1 ERAA01782A2 ERAA01782A3

- - - - - - - - - - - ERAA02507A0 ERAA02507A2 - - - - - - - - - - - ERAA02507A1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

CF3M

Stainless

(1)

Steel

Monel

®(1)

Hastelloy® C

(1)

Aluminum-

Bronze

Monel

is a mark owned by Special Metals Corporation.

Hastelloy® C is a mark owned by Haynes International, Inc.

Key 2, Spring Case Part Numbers

MR98 Series

TYPE

MR98L

BODY SIZE

STYLE

In. DN Gray Cast Iron WCC Steel

1/4 NPT - - - -

1/2 15

3/4 and 1 20 and 25

Drilled Hole (standard) ERCA03546A0 ERCA02874A0 ERCA02874A3 ERCA02874A2 - - - - - - - - - - - - - - - - - - - - - -

1/4 NPT Vent ERCA00609A1 ERAA01872A2 ERAA01872A3 ERAA01872A3 - - - - - - - - - - - - - - - - - - - - - -

Drilled Hole (standard) ERCA03564A0 ERCA02883A0 ERCA02883A3 ERCA02883A2 - - - - - - - - - - - - - - - - - - - - - -

1/4 NPT Vent ERCA00615A0 ERAA01885A0 ERAA01885A4 ERAA01885A1 ERAA01885A2 ERAA01885A3

Drilled Hole (standard) ERCA03497A0 ERCA02908A0 ERCA02908A3 ERCA02908A2 - - - - - - - - - - - - - - - - - - - - - -

1/4 NPT Vent ERCA00623A0 ERCA00621A2 ERCA00621A6 ERCA00621A3 ERCA00621A4 ERCA00621A5

SPRING CASE MATERIAL

(1)

LCC Steel

1/4 NPT - - - - 1/4 NPT Vent (standard) - - - - - - - - - - - ERCA03517A0 ERCA03517A3 ERCA03517A2 - - - - - - - - - - - - - - - - - - - - - -

MR98LD

1/2 15 1/4 NPT Vent (standard) - - - - - - - - - - - ERCA03531A0 ERCA03531A3 ERCA03531A2 - - - - - - - - - - - - - - - - - - - - - -

3/4 and 1 20 and 25 1/4 NPT Vent (standard) - - - - - - - - - - - ERCA04405A0 ERCA04405A2 ERCA04405A1 - - - - - - - - - - - - - - - - - - - - - -

Drilled Hole (standard) ERCA03544A0 ERCA02872A0 ERCA02872A3 ERCA02872A2 - - - - - - - - - - - - - - - - - - - - - -

1/4 NPT Vent ERCA00610A1 ERAA01873A2 ERAA01873A4 ERAA01873A3 - - - - - - - - - - - - - - - - - - - - - -

Drilled Hole (standard) ERCA03562A0 ERCA02881A0 ERCA02881A3 ERCA02881A2 - - - - - - - - - - - - - - - - - - - - - -

1/4 NPT Vent ERCA00616A0 ERAA01886A0 ERAA01886A4 ERAA01886A1 ERAA01886A2 ERAA01886A3

Drilled Hole (standard) ERCA03496A0 ERCA02907A0 ERCA02907A3 ERCA02907A2 - - - - - - - - - - - - - - - - - - - - - -

1/4 NPT Vent ERCA00624A0 ERCA00622A2 ERCA00622A6 ERCA00622A3 ERCA00622A4 ERCA00622A5

MR98H

1/4 NPT - - - -

1/2 15

3/4 and 1 20 and 25

1-1/2 and 2 40 and 50 1/4 NPT Vent ERCA03641A0 ERCA02900A0 ERCA02900A5 ERCA02900A2 ERCA02900A3 ERCA02900A4

1/4 NPT - - - - 1/4 NPT Vent (standard) - - - - - - - - - - - ERCA03515A0 ERCA03515A3 ERCA03515A2 - - - - - - - - - - - - - - - - - - - - - -

MR98HD

and

MR98HDP

1/2 15 1/4 NPT Vent (standard) - - - - - - - - - - - ERCA03529A0 ERCA03529A3 ERCA03529A2 - - - - - - - - - - - - - - - - - - - - - -

3/4 and 1 20 and 25 1/4 NPT Vent (standard) - - - - - - - - - - - ERCA03499A0 ERCA03499A3 ERCA03499A2 - - - - - - - - - - - - - - - - - - - - - -

1-1/2 and 2 40 and 50 1/4 NPT Vent (standard) - - - - - - - - - - - ERCA03691A0 ERCA03691A3 ERCA03691A2 - - - - - - - - - - - - - - - - - - - - - -

1/4 NPT - - - - 1/4 NPT Vent - - - - - - - - - - - ERCA01262A0 ERCA01262A3 ERCA01262A2 - - - - - - - - - - - - - - - - - - - - - -

MR98HH

1/2 15 1/4 NPT Vent - - - - - - - - - - - ERCA00619A0 ERCA00619A3 ERCA00619A2 - - - - - - - - - - - - - - - - - - - - - -

3/4 and 1 20 and 25 1/4 NPT Vent - - - - - - - - - - - ERCA03279A0 ERCA03279A3 ERCA03279A2 - - - - - - - - - - - - - - - - - - - - - -

1/4 NPT - - - - 1/4 NPT Vent (standard) - - - - - - - - - - - ERCA01358A0 ERCA01358A3 ERCA01358A2 - - - - - - - - - - - - - - - - - - - - - -

MR98HHD

1/2 15 1/4 NPT Vent (standard) - - - - - - - - - - - ERCA01381A0 ERCA01381A3 ERCA01381A2 - - - - - - - - - - - - - - - - - - - - - -

3/4 and 1 20 and 25 1/4 NPT Vent (standard) - - - - - - - - - - - ERCA01360A0 ERCA01360A3 ERCA01360A2 - - - - - - - - - - - - - - - - - - - - - -

1. Meets the chemical and physical requirements of NACE MR0175-2002, NACE MR0103 and NACE MR0175/ISO 15156.

(1)

CF8M

Stainless Steel

®(1)

Monel

(1)

Hastelloy® C

(1)

Key 4*, Valve Plug, Metal Seat

BODY SIZE

In. DN 416 Stainless Steel 316 Stainless Steel

BODY STYLE

1/4 NPT - - - - Without control line GF04909X022 GF04909X032 - - - - - - - - - - - GF04909X052 GF04909X042

1/2 15

3/4 and 1 20 and 25

Without control line ERCA01337A0 ERCA01337A1 ERCA01337A4 ERCA01337A3 ERCA01337A2

With control line ERCA01305A0 ERCA01305A1 - - - - - - - - - - - ERCA01305A3 ERCA01305A2

Without control line GF04828X022 GF04828X032 GF04828X062 GF04828X052 GF04828X042

With control line GF05479X022 GF05479X032 - - - - - - - - - - - GF05479X052 GF05479X042

Without control line GF04899X022 GF04899X032 GF04899X062 GF04899X052 GF04899X042

1-1/2 and 2

1. NACE MR0175-2002, NACE MR0103 and NACE MR0175/ISO 15156.

*Recommended Spare Part

Monel

is a mark owned by Special Metals Corporation.

Hastelloy® C is a mark owned by Haynes International, Inc.

and 50

With control line and

with composition diaphragm

With control line and

with metal diaphragm

GF05514X022 GF05514X032 - - - - - - - - - - - GF05514X052 GF05514X042

GF05514X022 GF05514X032 - - - - - - - - - - - GF05518X052 GF05518X042

VALVE PLUG MATERIAL

(1)

Alloy 6

(1)

Hastelloy® C

(1)

Monel

® (1)

MR98 Series

Key 4*, Valve Plug, Composition Seat

BODY SIZE

In. DN 416 Stainless Steel 316 Stainless Steel

BODY STYLE

VALVE PLUG MATERIAL

(1)(2)

1/4 NPT - - - - Without control line GF05032X022 GF05032X032 - - - - - - - - - - -

1/2 15

3/4 and 1 20 and 25

1-1/2 and 2 40 and 50

*Recommended Spare Part

1. NACE MR0175-2002, NACE MR0103 and NACE MR0175/ISO 15156.

2. Oxygen Service

Without control line ERCA01338A0 ERCA01338A1 - - - - - - - - - - -

With control line ERCA01333A0 ERCA01333A1 ERCA01333A3

Without control line GF04829X022 GF04829X032 - - - - - - - - - - -

With control line GF05547X022 GF05547X032 GF05547X052

Without control line GF05520X022 GF05520X032 - - - - - - - - - - -

With control line GF05518X022 GF05518X032 GF05518X052

Key 12*, Composition Diaphragm, NACE

TYPE

MR98L and MR98LD

MR98H, MR98HH,

MR98HD, MR98HDP

and MR98HHD

*Recommended Spare Part

1/4 NPT - - - - GF05051X012 GF05051 X022 GF05051X032

3/4 and 1 20 and 25 ERC A00603A0 ERCA00603A1 ERCA00603A2

1/4 NPT - - - - GF05045X012 GF05045X022 GF05045X032

3/4 and 1 20 and 25 ERC A00518A0 ERCA00518A1 ERCA00518A2

1-1/2 and 2 40 and 50 ERC A00661A0 ERCA00661A1 ERCA00661A2

BODY SIZE DIAPHRAGM MATERIAL

In. DN Neoprene (CR)

Fluorocarbon (FKM)

(2 required)

1/2 15 ERCA00514A0 ERCA00514A1 ERCA00514A2

1/2 15 E RCA00512 A0 ERCA00512A1 ERCA00512A2

Hastelloy® C

EPDM

(2 required)

(1)

Key 12*, Metal Diaphragm

TYPE

MR98L

3/4 and 1 20 and 25 ER CA00112A0 ERCA00112A1 ERCA00112A2 ERCA00112A3

MR98H

3/4 and 1 20 and 25 GF05737X022 GF05737X032 GF05737X042 GF05737X052

1-1/2 and 2 40 and 50 ER CA00527A0 ERCA00527A1 ERCA00527A2 ERCA00527A3

MR98LD

3/4 and 1 20 and 25 ER CA00112A0 - - - - - - - - - - - ERCA00112A2 ERCA00112A3

MR98HD and

MR98HDP

3/4 and 1 20 and 25 GF05737X022 - - - - - - - - - - - GF05737X042 GF05737X052

1-1/2 and 2 40 and 50 ER CA00527A0 - - - - - - - - - - - ERCA00527A2 ERCA00527A3

MR98HH

3/4 and 1 20 and 25 GF05737X022 GF05737X032 GF05737X042 GF05737X052

MR98HHD

3/4 and 1 20 and 25 GF05737X022 - - - - - - - - - - - GF05737X042 GF05737X052

*Recommended Spare Part

1. Only one metal diaphragm is needed for Types MR98L and MR98LD with 1/4 NPT body size and 2 to 7 psi / 0.14 to 0.48 bar spring range.

Monel® is a mark owned by Special Metals Corporation. Hastelloy® C is a mark owned by Haynes International, Inc.

BODY SIZE BODY MATERIAL (2 REQUIRED)

(1)

302 Stainless Steel

(Oxygen Service)

GF05030X022

(1)

In. DN 302 Stainless Steel

1/4 NPT - - - - GF05030X012

1/2 15 ERCA00506A0 ERCA00506A1 ERCA00506A2 ERCA00506A3

1/4 NPT - - - - GF04912X012 GF04912X022 GF04912X032 GF04912X042

1/2 15 E RCA00496 A0 ERCA00496A1 ERCA00496A2 ERCA00496A3

1/4 NPT - - - - GF05030X012

(1)

- - - - - - - - - - - G F05030X032

1/2 15 E RCA00506 A0 - - - - - - - - - - - ERCA00506A2 ERCA00506A3

1/4 NPT - - - - GF04912X012 - - - - - - - - - - - GF04912X032 GF04912X042

1/2 15 E RCA00496 A0 - - - - - - - - - - - ERCA00496A2 ERCA00496A3

1/4 NPT - - - - GF04912X012 GF04912X022 GF04912X032 GF04912X042

1/2 15 E RCA00496 A0 ERCA00496A1 ERCA00496A2 ERCA00496A3

1/4 NPT - - - - GF04912X012 - - - - - - - - - - - GF04912X032 GF04912X042

1/2 15 E RCA00496 A0 - - - - - - - - - - - ERCA00496A2 ERCA00496A3

Monel

GF05030X032

Hastelloy® C

(1)

GF05030X042

(1)

MR98 Series

15L2

10L2

(2)

7L2

5L2

9 L2

3 L2

SEALED ADJUSTING

SCREW OPTION

COMPOSITE SEAT OPTION

(3)

22L2

TEE-HANDLE OPTION

24 T

NAMEPLATE AND FLOW ARROW

GF04917

(1)

APPLY

T = THREAD LOCKER L1 = GENERAL PURPOSE PTFE OR LITHIUM GREASE FOR O-RINGS L2 = ANTI - SEIZE COMPOUND

L4 = GRAPHITE SEALANT FOR GRAPHITE RING

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. Note: Use key 69 or 71 only when specied.

Figure 4. Type MR98L Assembly

CONTROL LINE OPTION

METAL DIAPHRAGM OPTION

MR98 Series

36L3

10L2

16 L2

7L2

5L2

37 L1

33 L2

45 L1

(2)

3 L2

(3)

NAMEPLATE AND FLOW ARROW

24T

COMPOSITE SEAT OPTION

DETAIL B

GF04921

(1)

APPLY

T = THREAD LOCKER L1 = GENERAL PURPOSE PTFE OR LITHIUM GREASE FOR O-RINGS L2 = ANTI - SEIZE COMPOUND L3 = SILICONE GREASE

L4 = GRAPHITE SEALANT FOR GRAPHITE RING

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. Note: Use key 69 or 71 only when specied.

SEE DETAIL B

METAL DIAPHRAGM OPTION

Figure 5. Type MR98LD Assembly

CONTROL LINE OPTION

DETAIL A

MR98 Series

15L2

9 L2

SEALED ADJUSTING

22L2

TEE-HANDLE OPTION

SCREW OPTION

10L2

(2)

(3)

7 L2

3 L2

5 L2

CONTROL LINE OPTION

24T

53 L1

NAMEPLATE AND FLOW ARROW

GF04916

(1)

APPLY

T = THREAD LOCKER L1 = GENERAL PURPOSE PTFE OR LITHIUM GREASE FOR O-RINGS L2 = ANTI - SEIZE COMPOUND

L4 = GRAPHITE SEALANT FOR GRAPHITE RING

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. Note: Use key 69 or 71 only when specied.

COMPOSITE SEAT OPTION

METAL DIAPHRAGM OPTION

Figure 6. Type MR98H Assembly with 1/4 NPT to NPS 1 / DN 25 Body Sizes

MR98 Series

15L2

9 L2

SEALED ADJUSTING

TEE-HANDLE OPTION

22 L2

SCREW OPTION

45L1

(2)

53 L1

CONTROL LINE OPTION

3L2

5L2

(3)

NAMEPLATE AND FLOW ARROW

ERAA03248

(1)

APPLY

T = THREAD LOCKER L1 = GENERAL PURPOSE PTFE OR LITHIUM GREASE FOR O-RINGS L2 = ANTI - SEIZE COMPOUND

L4 = GRAPHITE SEALANT FOR GRAPHITE RING

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. Note: Use key 69 or 71 only when specied.

COMPOSITE SEAT OPTION

METAL DIAPHRAGM OPTION

Figure 7. Type MR98H Assembly with NPS 1-1/2 to 2 / DN 40 to 50 Body Sizes

MR98 Series

33L2

(2)

7L2

36 L3

37 L1

NAMEPLATE AND FLOW ARROW

24 T

CONTROL LINE OPTION

3 L2

(3)

5 L2

SEE DETAIL B SEE DETAIL A

DETAIL B METAL DIAPHRAGM OPTION

GF04920

(1)

APPLY

T = THREAD LOCKER L1 = GENERAL PURPOSE PTFE OR LITHIUM GREASE FOR O-RINGS L2 = ANTI - SEIZE COMPOUND L3 = SILICONE GREASE

L4 = GRAPHITE SEALANT FOR GRAPHITE RING

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. Note: Use key 69 or 71 only when specied.

COMPOSITE SEAT OPTION

DETAIL A

Figure 8. Type MR98HD Assembly with 1/4 NPT to NPS 1 / DN 25 Body Sizes

MR98 Series

33 L2

9 L2

16 L2

(2)

NAMEPLATE AND FLOW ARROW

(3)

METAL DIAPHRAGM OPTION

COMPOSITE SEAT OPTION

ERAA03271

(1)

APPLY

T = THREAD LOCKER L1 = GENERAL PURPOSE PTFE OR LITHIUM GREASE FOR O-RINGS L3 = SILICONE GREASE L2 = ANTI - SEIZE COMPOUND

L4 = GRAPHITE SEALANT FOR GRAPHITE RING

1. Lubricants and sealants must be selected such that they meet the temperature requirements.

2. Apply L2 (anti-seize compound) on key 16 only for Stainless steel bolts.

3. Apply L4 (graphite sealant) instead of L1 (general purpose PTFE or lithium grease) on key 63 for graphite ring. Note: Use key 69 or 71 only when specied.

Figure 9. Type MR98HD Assembly with NPS 1-1/2 to 2 / DN 40 to 50 Body Sizes

24 T

CONTROL LINE OPTION

53 L1

MR98 Series

SEE NOTE 4

15L2

(2)

9 L2

3 L2

NAMEPLATE AND FLOW ARROW

METAL DIAPHRAGM OPTION

(3)

5 L2

COMPOSITE SEAT OPTION CONTROL LINE OPTION

ERCA00605

(1)

APPLY

T = THREAD LOCKER L1 = GENERAL PURPOSE PTFE OR LITHIUM GREASE FOR O-RINGS L2 = ANTI - SEIZE COMPOUND

L4 = GRAPHITE SEALANT FOR GRAPHITE RING

1. Lubricants and sealants must be selected such that they meet the temperature requirements.

2. Apply L2 (anti-seize compound) on key 16 only 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. Key 68 is available for Type MR98HH with NPS 3/4 and 1 / DN 20 and 25 bodies only. Note: Use key 69 or 71 only when specied.

Figure 10. Type MR98HH Assembly with 1/4 NPT to NPS 1 / DN 25 Body Sizes

53 L1

MR98 Series

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McKinney, Texas 75070 USA T +1 800 558 5853

+1 972 548 3574

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Bologna 40013, Italy T +39 051 419 0611

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The contents of this publication are presented for informational purposes only, and while every e󰀨ort has been made to ensure their accuracy, they are not to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. All sales are governed by our terms and conditions, which are available upon request. We reserve the right to modify or improve the designs or specications of such products at any time without notice.

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Emerson MR98L, MR98H Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual