Instruction Manual
D200319X012
377 Trip Valve
August 2012
18
Table 2. Common Parts (continued)
KEY
NUMBER
DESCRIPTION
QUANTITY
REQUIRED
PART MATERIAL
Trip Valve Construction
Aluminum
Stainless Steel
65
Screen (not shown)
For boss mounted 377D, 377U, 377CW or
377CCW
Stainless steel
Stainless steel
71
Spring retainer spacer (use w/ manifold assembly)
(not shown)
Stainless steel
Stainless steel
73
Manifold
Aluminum
CF3M SST casting
(316L SST, cast)
74
O‐ring
2
Nitrile
(1)
Fluorocarbon
Nitrile
(1)
Fluorocarbon
75
Travel stop
Pl steel
(2)
76
Cap screw (not shown)
2
Pl steel
S31600 (316 SST)
77
Silicone‐based lubricant (not furnished with trip valve)
78
Cap Screw (not shown), Bracket mounted
2
Pl steel
Stainless steel
79
Lockwasher (not shown), Bracket mounted
4
Pl steel
Stainless steel
80
Hex nut (not shown), Bracket mounted
2
Pl steel
Stainless steel
88
Washer (not shown), Bracket mounted
2
Pl steel
Stainless steel
89
Gasket
Standard
High temperature
Nitrile nylon
(1)
Polyacrylate/nylon
Nitrile nylon
(1)
Polyacrylate/nylon
95
Mounting plate (not shown), Bracket mounted
Pl steel
Stainless steel
1. Included in Repair Kit
2. Not required for stainless steel trip valve.
Fittings
Note
The following is a list of tubing fittings and pipe fittings used for trip
valve installation. Key numbers and quantities are not shown due to the
variations in piping arrangements possible. To order replacement
fittings, determine the part name, size, and number of replacements
required and contact your Emerson Process Management sales office.
Description
Pipe Tee, galvanized iron or stainless steel
1/4 NPT
3/4 NPT
Description
Pipe Nipple, galvanized or stainless steel
1/4 NPT
3/4 NPT
Connector, brass or stainless steel
1/4 NPT x 1/4 O.D.
1/4 NPT x 3/8 O.D.
1/2 NPT x 1/2 O.D.
Elbow, brass or stainless steel
1/4 NPT x 3/8 O.D.
Pipe cross, galvanized iron or stainless steel
1/4 NPT
3/4 NPT
Pipe Bushing, plated or stainless steel
3/4 NPT x 1/4 NPT
3/4 NPT x 1/2 NPT
