Instruction Manual
D200319X012
377 Trip Valve
August 2012
15
Parts Ordering
When corresponding with your Emerson Process Management sales office about this equipment, always refer to the
trip valve serial number which is located on the nameplate. Refer to table 2 for common parts. Contact your Emerson
Process Management sales office if part numbers are needed.
WARNING
Use only genuine Fisher replacement parts. Components that are not supplied by Emerson Process Management should
not, under any circumstances, be used in any Fisher trip valve. Use of components not supplied by Emerson Process
Management may void your warranty, might adversely affect the performance of the instrument, and could cause personal
injury and property damage.
Parts Kits
Description Part Number
Repair Kit
Kit include valve plugs, stems, plug assemblies, and nitrile
diaphragms, O‐rings, and gasket (keys 12, 14, 15, 17, 22,
23, 24, 26, 29, 63, 74, and 89).
Aluminum Construction R377X000012
Stainless Construction R377X000032
Parts List
Table 2. Common Parts
KEY
NUMBER
DESCRIPTION
QUANTITY
REQUIRED
MATERIAL
Trip Valve Construction
Aluminum Stainless Steel
1 Adjusting screw cap Plastic Plastic
2 Set screw Pl steel S31600 (316 SST)
3 Hex nut Pl steel S31600
4
Spring case
Aluminum
CF3M SST casting
(316L SST, cast)
5 Upper spring seat Pl steel S31600
6 Spring Pl steel S30200 (302 SST)
7 Cap screw (not shown) 4 Pl steel S31600
8 Valve guide Anodized aluminum/TFE S31603 (316L SST)
9 Spring, seat Aluminum Stainless steel
10 Spring Pl steel S30200
11 Diaphragm washer Aluminum Stainless steel
12 Diaphragm
Nitrile
(1)
Fluorocarbon
Nitrile
(1)
Fluorocarbon
13 Diaphragm retainer Anodized aluminum/TFE S31603
14 Valve plug
Brass/nitrile
(1)
Brass/fluorocarbon
SST/nitrile
(1)
SST/fluorocarbon
1. Included in Repair Kit
-continued-
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