Instruction Manual
D103300X012
8580 Valve
April 2020
14
2. Remove the actuator per instructions in separate actuator instruction manuals, then remove the cap screws and
nuts (keys 35 and 36). Remove the clamp (key 130, figure 4) if the strap (key 131, figure 4) is used.
3. Remove the packing flange nuts and the packing flange (key 26) if used and pull out the packing follower (key 25).
Figure 6. Orientation of Bearing Tabs
BEARING TAB
BEARING TAB
BACKSIDE OF VALVE
Table 6. Follower Shaft Internal Threads
VALVE SIZE
THREAD SIZE
DN NPS
50 2 M8 X 1.25
80 3 M10 X 1.50
100 4 M12 X 1.75
180 6 M16 X 2.00
200 8 M20 X 2.50
250 10 M20 X 2.50
300 12 M24 X 3.00
1. For valves with a two−piece, split−shaft design only. DN200 − 300 (NPS 8−12) valves changed to a one−piece, through−shaft design in 2015.
Table 7. Recommended Blind Flange Bolt Torque
VALVE SIZE TORQUE
DN NPS NSm lbfSft
50 to 150 2 to 6 9.5 7.0
200, 250 8, 10 23 17
300 12 45 33
To Next Page
Loading...
