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Large ET and ED Valves
July 2014
Figure 4. Typical Globe Valve Bonnet
CU4317
7. Lift the valve plug and stem assembly out of the valve body and set it on a protective surface. If the valve plug is to
be reused, protect the valve plug seating surface to prevent scratches.
Table 3. Packing Flange Nut Torque for Packing Without a Spring
VALVE STEM
PRESSURE
DIAMETER
mm
Inch
CL150 & 300
31.8
1-1/4
50.8
2
Table 4. Body-to-Bonnet Bolt Torque
BOLT SIZE, INCH
1-1/4
1-1/2
1. For B7, B7M, B16, and 660 bolting materials. For other materials, contact your Emerson Process Management sales office for torque values.
8. Install screws or bolts into the tapped holes in the top of the cage assembly (key 3), and carefully lift it out of the
valve body. Remove the cage gasket (key 11).
9. If further trim maintenance is required, refer to the Trim Maintenance section.
10
GRAPHITE-TYPE PACKING
Minimum Torque
RATING
NSm
LbfSft
33
24.3
CL600
45
33.2
CL300
43
CL600
61
THREADS PER INCH
8
8
Maximum Torque
NSm
LbfSft
49
36.1
67
49.4
32
65
48
45
91
67
NSm
1750
Instruction Manual
PTFE-TYPE PACKING
Minimum Torque
NSm
LbfSft
16
11.8
21
15.5
20
15
27
20
(1)
BOLTING TORQUE
990
D103553X012
Maximum Torque
NSm
LbfSft
25
18.4
33
24.3
31
23
41
30
LbfSft
730
1290
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