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8580 Valve
April 2020
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
Table 6. Follower Shaft Internal Threads
DN
50
80
100
180
200
250
300
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
DN
50 to 150
200, 250
300
14
VALVE SIZE
VALVE SIZE
NPS
2 to 6
8, 10
12
BACKSIDE OF VALVE
NPS
2
3
4
6
8
10
12
NSm
9.5
23
45
Instruction Manual
D103300X012
BEARING TAB
THREAD SIZE
M8 X 1.25
M10 X 1.50
M12 X 1.75
M16 X 2.00
(1)
M20 X 2.50
(1)
M20 X 2.50
(1)
M24 X 3.00
TORQUE
lbfSft
7.0
17
33
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