Instruction Manual

Instruction Manual
D103553X012
Large ET and ED Valves
September 2014
10
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 s cratches.
Table 3. Packing Flange Nut Torque for Packing Without a Spring
VALVE STEM
DIAMETER
PRESSURE
RATING
GRAPHITE-TYPE PACKING PTFE-TYPE PACKING
Minimum Torque Maximum Torque Minimum Torque Maximum Torque
mm Inch NSm LbfSft NSm LbfSft NSm LbfSft NSm LbfSft
31.8 1-1/4
CL150 & 300
CL600
33
45
24.3
33.2
49
67
36.1
49.4
16
21
11.8
15.5
25
33
18.4
24.3
50.8 2
CL300 43 32 65 48 20 15 31 23
CL600 61 45 91 67 27 20 41 30
Table 4. Body-to-Bonnet Bolt Torque
BOLT SIZE, INCH THREADS PER INCH
BOLTING TORQUE
(1)
NSm LbfSft
1-1/4 8 990 730
1-1/2 8 1750 1290
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
valvebody.Removethecagegasket(key11).
9. If further trim maintenance is required, refer to the Trim Maintenance section.