Emerson FISHER MR108 Series, Installation Manual

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3
Type MR108
Parts List
Key Description
1 Valve Body
2 Body Flange
3 Stud Bolt
DN 25 / NPS 1 (4 required)
DN 50, 80 and 100 / NPS 2, 3 and 4 (8 required)
4 Gasket
9 Valve Spring
11 Cage
12 Port Seal
13 Seat Ring
14 Piston Ring
15 Upper Seal
16 Valve Plug
17 Cage O-ring
20 Valve Plug O-ring
21 Adaptor O-ring
24 Drive Screw (6 required)
25 Flow Arrow
26 Vent (2 required/
1 required for Pressure-Loaded Actuator)
29 Hex Nut
DN 25 / NPS 1 (4 required)
DN 50, 80 and 100 / NPS 2, 3 and 4 (8 required)
30 Pipe Plug
33 NACE Tag (not shown)
34 Seal Wire (not shown)
38 Pipe Plug
39 Pipe Plug
40 Stem Actuator
41 Flange Nut
43 Nameplate
44 Lube Fitting
45 Wiper Ring
46 Bearing (2 required)
47 Valve Stem O-ring (2 required)
48 Jam Nut (2 required)
49 Spring Washer
51 Lower Diaphragm Head O-ring
52 Lower Spring Guide
53 Lower Diaphragm Head
54 Lower Spring Seat
55 Diaphragm Plate
56 Diaphragm
57 Cap Screw
Low-Pressure Actuator (16 required)
High-Pressure Actuator (8 required)
58 Hex Nut
Low-Pressure Actuator
Steel (16 required)
Stainless steel (16 required)
High-Pressure Actuator
Steel (8 required)
Stainless steel (16 required)
60 Bonnet O-ring
61 Bonnet
62 Lower Diaphragm Casing
63 Upper Diaphragm Casing
64 Upper Casing O-ring
65 Cap Screw (10 required)
66 Spring Case Spacer
67 Cap Screw (6 required)
68 Control Spring
Figure 1. Type MR108 Assembly Drawings
GE38436
72
70
43
44 L2
74 L1
1 L1
73 L3
30
26
2
38 24 25
S
S
L1 57
L1 67
24 43
HIGH-PRESSURE ACTUATOR OPTION
71
56
58
57
62
51
63
64
54
53
L1
L1
L1
L1
S
67 L1
L1
L1
L1
L1
L1
L1
L1
L1
L1
L1
L1
L1
L1
L1
L1
L3
S
S
S
S
12
29
39
84
74
65
53
57
55
26
76
68
71
69
52
64
66
65
63
62
56
58
51
61
21
40
11
4
3
9
13
16
17
SEE DETAIL X
SEE DETAIL Z
SEE DETAIL W
SEE DETAIL Y
SEE DETAIL V
APPLY LUBRICANT OR SEALANT
(1)
:
L1 = MULTI-PURPOSE POLYTETRAFLUOROETHYLENE (PTFE) LUBRICANT
L3 = ANTI-SEIZE COMPOUND
S = MULTI-PURPOSE PTFE THREAD SEALANT
1. Lubricants and sealants must be selected such that they meet the
temperature requirements.
Note: Keys 64 and 71 are used only for pressure-loaded actuators.