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
3
L2
5
L2
L1
63
L1
L4
L2
(2)
L2
Americas
McKinney, Texas 75070 USA
T +1 800 558 5853
+1 972 548 3574
Europe
Bologna 40013, Italy
T +39 051 419 0611
Asia Pacic
Singapore 128461, Singapore
T +65 6777 8211
Middle East and Africa
Dubai, United Arab Emirates
T +971 4 811 8100
Emerson Automation Solutions
Regulator Technologies
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Webadmin.Regulators@emerson.com
For further information on the current
PED revision see Bulletin: D103053X012
or scan the QR code.
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.
Fisher.com
MR98 Series
D103588X014 © 2014, 2022 Emerson Process Management Regulator
Technologies, Inc. All rights reserved. 10/22.
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 Automation Solutions.
The contents of this publication are presented for informational purposes
only, and while every eort 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 specications 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.
APPLY
(1)
:
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.
Figure 2. Type MR98HD Assembly with 1/4 NPT, DN 15 to 25 / 1/2 to 1 In. Bodies
CONTROL LINE OPTION
COMPOSITE SEAT OPTION
SEE DETAIL B SEE DETAIL A
METAL DIAPHRAGM OPTION
DETAIL A
OR
(3)
DETAIL B