Emerson Fisher MR98LD User manual

D103588X014
Installation Guide
English – April 2014 MR98 Series
www.fisherregulators.com
Introduction
This Installation Guide provides instructions for installation, startup
and adjustment. To receive a copy of the instruction manual,
contact your local Sales Ofce or view a copy at
www.fisherregulators.com. For further information refer to
MR98 Series Backpressure Regulators, Relief and Differential
Relief valves Instruction Manual, D103588X012.
P.E.D. Category
This product may be used as a safety accessory with pressure
equipment in the following Pressure Equipment Directive 97/23/EC
categories. It may also be used outside of the Pressure Equipment
Directive using Sound Engineering Practice (SEP) per table below.
Monel® is a mark owned by Special Metals Corporation.
Hastelloy® C is a mark owned by Haynes International, Inc.
1. The pressure/temperature limits in this Installation Guide and any applicable standard or code limitation should not be exceeded.
2. The pressure limits given are based on the body size and body materials only. Actual pressure limits of the assembled regulator may decrease and vary depending on the
temperature, body end connection, diaphragm, seat and/or trim material of the regulator.
3. Fluorocarbon (FKM) is limited to 93°C / 200°F hot water.
Maximum Spring Case Loading Pressure for
Types MR98LD, MR98HD and MR98HHD (Spring Setting
Plus Loading Pressure)(1)(2)
Type MR98LD Spring Case
Gray Cast Iron: 3.4 bar / 50 psig
Steel or Stainless Steel: 8.6 bar / 125 psig
Type MR98HD Spring Case
Gray Cast Iron: 17.2 bar / 250 psig
Steel or Stainless Steel: 20.7 bar / 300 psig
Type MR98HHD Spring Case
Steel or Stainless Steel: 20.7 bar / 300 psig
Temperature Capabilities(1)
Elastomer Parts:
Nitrile (NBR) and Neoprene (CR): -40 to 82°C / -40 to 180°F
Fluorocarbon (FKM)(3):-18 to 149°C / 0 to 300°F
Ethylenepropylene (EPDM): -7 to 135°C / 20 to 275°F
  Peruoroelastomer(FFKM): -18 to 218°C / 0 to 425°F
  Polytetrauoroethylene(PTFE)Diaphragmprotector:
-40 to 204°C / -40 to 400°F
Body Materials:
Gray Cast Iron: -29 to 208°C / -20 to 406°F
WCC Steel: -29 to 232°C / -20 to 450°F
LCC Steel: -40 to 232°C / -40 to 450°F
Stainless Steel, Monel®and Hastelloy®C:
-40 to 232°C / -40 to 450°F
Pressure Registration
Internal or External

Metal Seats: Class IV
 Class IV
Elastomer Seats: Class VI or better
Installation
!




operated and maintained in accordance with
international and applicable codes and regulations
and Emerson Process Management Regulator
Technologies, Inc. instructions.


personal injury and property damage could






located far enough away from any buildings or
windows so to not create a further hazard and

anything that could clog it.





TYPE PRODUCT SIZE  
All 1/4 NPT, DN 15 to 25 /
1/2 to 1-inch
All available
materials SEP
MR98H/
MR98HD
DN 40 and 50 /
1-1/2 and 2-inch
Steel and
Stainless Steel II


Type MR98L: Direct-operated low pressure backpressure
regulator/relief valve with 0.14 to 2.6 bar / 2 to 38 psig set
pressure range
Type MR98H: Direct-operated high pressure backpressure
regulator/relief valve with 0.34 to 13.8 bar / 5 to 200 psig set
pressure range
Type MR98HH: Direct-operated high pressure backpressure/
relief valve with 10.3 to 25.9 bar / 150 to 375 psig set
pressure range
Type MR98LD: Pressure-loaded low pressure differential
pressure relief valve with 0.14 to 2.6 bar / 2 to 38 psi set
pressure range
Type MR98HD: Pressure-loaded high pressure differential
pressure relief valve with 0.34 to 13.8 bar / 5 to 200 psi set
pressure range
Type MR98HHD: Pressure-operated high pressure
backpressure/relief valve with 10.3 to 25.9 bar /
150 to 375 psi differential set pressure range

7.22 mm / 0.284-inch orice
 10.56 mm / 0.416-inch orice

16.02 mm / 0.631-inch orice

29 mm / 1.142-inch orice
End Connection Styles
NPT, SWE and Welded and Integral CL150 RF, CL300 RF
and PN 16/25/40 RF; all sizes are fabricated with slip-on
anges (for welded end connections) and are EN anged
356-mm face-to-face (14-inch face-to-face)
Maximum Inlet and Outlet Pressure Rating
See Table 2
(1)(2)
See Table 2
Set Pressure Ranges(1)
See Table 1

2
MR98 Series
Table 1. MR98SeriesBodySizesandPressureRanges

or where conditions exceed any ratings of the
adjacent piping or piping connections.


(as required by the appropriate code, regulation

exceeding limits.


in personal injury and property damage due to


in a safe location.
Clean out all pipelines before installation of the relief valve or
backpressure regulator and check to be sure the relief valve or
backpressure regulator has not been damaged or has collected
foreign material during shipping. For NPT bodies, apply pipe
compound to the external pipe threads. For anged bodies, use
suitable line gaskets and approved piping and bolting practices.
Install the relief valve or backpressure regulator in any position
desired, unless otherwise specied, but be sure ow through the
body is in the direction indicated by the arrow on the body.







positioned so that water, ice and other foreign
materials cannot enter the spring case through





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 and MR98HHD. The valve should be inspected for
damage after any overpressure condition. ®

Startup
The relief valve or backpressure regulator is factory set at
approximately the midpoint of the spring range or the pressure
requested, so an initial adjustment may be required to give
the desired results. With proper installation completed and
relief valves properly adjusted, slowly open the upstream and
downstream shutoff valves (if applicable).

To change the control pressure, remove closing cap or loosen
the jam nut and turn the adjusting screw clockwise to increase
control pressure or counterclockwise to decrease pressure.
Monitor the control pressure with a test gauge during the
adjustment. Replace closing cap or tighten the jam nut to
maintain the desired setting.

!




attempting disassembly.
TYPE BODY SIZE (1)
 Inch bar psig
MR98L and MR98LD 15, 20 and 25 1/4 NPT, 1/2, 3/4 and 1
0.14 to 0.48 2 to 7
0.41 to 0.97 6 to 14
0.83 to 1.7 12 to 25
1.4 to 2.6 20 to 38
MR98H and MR98HD
15, 20 and 25 1/4 NPT, 1/2, 3/4 and 1
1.0 to 2.4 15 to 35
1.7 to 5.2 25 to 75
4.8 to 9.7 70 to 140
9.0 to 13.8 130 to 200
40 and 50 1-1/2 and 2
0.34 to 2.4 5 to 35
1.4 to 4.5 20 to 65
3.4 to 6.9 50 to 100
5.2 to 11.7 75 to 170
MR98HH and MR98HHD 15, 20 and 25 1/4 NPT, 1/2, 3/4 and 1 10.3 to 25.9 150 to 375
1. All springs may be backed off to 0 bar / 0 psig. However, highest capacities and best performances are obtained by using these springs in their recommended ranges.
Table 2.MaximumColdWorkingPressuresofBodySizeandMaterials(1)(2)

TYPE BODY SIZE 



PRESSURE


bar psig bar psig bar psig
MR98L/
MR98LD All Sizes Gray Cast Iron 4.14 60 4.14 60 3.44 50
Steel; Stainless Steel; Monel®; Hastelloy® C 10.3 150 10.3 150 8.61 125
MR98H/
MR98HD All Sizes Gray Cast Iron 20.7 300 20.7 300 17.2 250
Steel; Stainless Steel; Monel®;Hastelloy® C; Aluminum-Bronze 20.7 300 20.7 300 20.7 300
MR98HH/
MR98HHD All Sizes All available materials 27.6 400 27.6 400 20.7 300
1. The pressure/temperature limits in this Installation Guide 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.
Monel® is a mark owned by Special Metals Corporation.
Hastelloy® C is a mark owned by Haynes International, Inc.

3
MR98 Series
Figure 1.TypeMR98LAssembly
(1):




GF04917
*Recommended Spare Part
1. Lubricants and sealants must be selected such that they meet the temperature requirements.
2. Apply L2 (anti-seize compound) on key 16 for Stainless Steel bolts.
3. Apply L4 (graphite sealant) instead of L1 (general purpose PTFE or lithium grease) on key 63 for graphite ring.
4. Only one metal diaphragm is needed for Types MR98L and MR98LD with 1/4 NPT body size and 0.14 to 0.48 bar / 2 to 7 psi spring range.

Parts List

1 Body
2 Spring Case
3* Orice
4* Valve Plug
5 Bottom Plug
7 Valve Plug Guide
8 Lower Spring Seat
9 Upper Spring Seat
10 Pusher Post
11 Control Spring
12* Diaphragm (2 required for metal, FKM and EPDM diaphragms)(4)
13 Nameplate
14 Diaphragm Protector (not shown)
15 Adjusting Screw
16 Cap Screws
Types MR98L and MR98LD
1/4 NPT; DN 15 / 1/2-inch bodies - 10 required
DN 20 and 25 / 3/4 and 1-inch bodies - 12 required
Types MR98H, MR98HD, MR98HH and MR98HHD
1/4 NPT body - 6 required
DN 15 to 50 / 1/2 to 2-inch bodies - 8 required
17 Jam Nut
18 Drive Screw (4 required)
19* Diaphragm Gasket (2 required for pressure loaded spring case)
21 Diaphragm Head
22 Adjusting Screw Assembly
23 Handwheel (not shown)
24 Machine Screw
25 O-ring Retainer
25 Seat Retainer
28 Lockwasher
29* Gasket
31 Locknut
32 Stufng Box
33 Adjusting Screw
34 Packing Follower
35 Stufng Box Nut
36 Packing V-Ring (3 required)
37* Stuff Box Gasket
38 Handwheel / Handle
39 Internal Adaptor
40 External Adaptor
41 Machine Screw
41 Jam Nut
42 Spring
43 Washer
44 Washer
45* O-ring
47 NACE Tag (not shown)
48 Tag Wire (not shown)
49 Lockwasher (not shown)
50* Sealing Washer
51 Vent (not shown)
52 Plug
53* Valve Plug O-ring
57 Jam Nut (not shown)
58 Washer
59* O-ring
59* L-ring
62 Adaptor (not shown)
63* Bottom Plug Seal
64 Flow Arrow
65 Pipe Plug (not shown)
66 Pressure Gauge (not shown)
68 Restriction (not shown)
69 ATEX Tag (not shown)
70 PED Tag (not shown)
217
11
50
28
8
58
4
31
21
12
29
1
13 18
64 18
L2
7
L2
5L2
22
L2
24 T
3L2
9L2
63
L1
L4
59
25
52 53
10
L2
16
L2(2)
OR(3)
19
COMPOSITE SEAT OPTION
SEALED ADJUSTING
SCREW OPTION
TEE-HANDLE
OPTION CONTROL LINE OPTION
METAL DIAPHRAGM OPTION
15

MR98 Series
©Emerson Process Management Regulator Technologies, Inc., 2014; All Rights Reserved
The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their prospective owners. Fisher is a mark owned by Fisher Controls International LLC,
a business of Emerson Process Management.
Thecontentsofthispublicationarepresentedforinformationalpurposesonly,andwhileeveryeffort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.Wereservetherighttomodifyorimprovethedesignsorspecifications
ofsuchproductsatanytimewithoutnotice.
Emerson Process Management Regulator Technologies, Inc. does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use
and maintenance of any Emerson Process Management Regulator Technologies, Inc. product remains solely with the purchaser.
Industrial Regulators
Emerson Process Management
Regulator Technologies, Inc.
USA - Headquarters
McKinney, Texas 75070 USA
Tel: [phone]
Outside U.S. [phone]
Asia-Paci c
Shanghai 201206, China
Tel: [phone]
Europe
Bologna 40013, Italy
Tel: [phone]
Middle East and Africa
Dubai, United Arab Emirates
Tel: [phone]

Emerson Process Management
Regulator Technologies, Inc.
USA - Headquarters
McKinney, Texas 75070 USA
Tel: [phone]
Outside U.S. [phone]
Asia-Paci c
Singapore 128461, Singapore
Tel: [phone]
Europe
Bologna 40013, Italy
Tel: [phone]
Chartres 28008, France
Tel: [phone]
Middle East and Africa
Dubai, United Arab Emirates
Tel: [phone]
TESCOM
Emerson Process Management
Tescom Corporation
USA - Headquarters
Elk River, Minnesota 55330-2445, USA
Tels: [phone]
[phone]
Europe
Selmsdorf 23923, Germany
Tel: [phone]
Asia-Paci c
Shanghai 201206, China
Tel: [phone]
For further information visit www.fisherregulators.com
The distinctive diamond shape cast into every spring
case uniquely identifies the regulator as part of the
Fisher® brand and assures you of the highest-quality
engineering, durability, performance, and support.
Figure 2.TypeMR98HDAssemblywith1/4NPT,DN15to25/1/2to1-inchBodies
(1):





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.
GF04920
44 41 25
59
52
29
29
19
19
12
53
38
35
40
43
11 10
8
12
1
29
34
39
42
32
2
31
28
16
45
58
4
7
L2
33
L2 37 L1
24 T
36 L3
9
L2
3L2
5 L2
L1
63
L1
L4
L2(2)
OR(3)
L2
DETAIL B
DETAIL A
SEE DETAIL B SEE DETAIL A
METAL DIAPHRAGM OPTION
COMPOSITE SEAT OPTION
CONTROL LINE OPTION