TOV
Installation, Operation and Maintenance Manual
12
WKM-TOV-IOM
Recommended bolt and stud lengths for installation in ASME B16.5 flanges are provided in the Table 3
Valve
Bolt Circle
Dia. (in.)
Bolt Size
ISO Body
Size
Class
Qty.
Stud length
"A" (in.)
Cap screw
length "B" (in.)
16"
150
21.25
1-8 UNC
8
4.29
3.16
300
22.5
1 1/4-8 UN
8
5.42
4.05
600
23.75
1 1/2-8 UN
16
7.58
5.96
18"
150
22.75
1 1/8-8 UN
8
4.61
3.36
300
24.75
1 1/4-8 UN
8
5.54
4.17
600
25.75
1 5/8-8 UN
16
7.84
6.09
20"
150
25
1 1/8-8 UN
8
5.02
3.68
300
27
1 1/4-8 UN
8
5.75
4.30
600
28.5
1 5/8-8 UN
16
8.05
6.22
24"
150
29.5
1 1/4-8 UN
8
5.12
3.67
300
32
1 1/2-8 UN
8
6.64
4.94
600
33
1 7/8-8 UN
16
9.12
7.04
Valve position verification
1. Check the operation of the valve by stroking it to "full open" and "full close". To verify the valve orientation, the disc
position is accomplished by dimple on shaft. When the dimple is inline with flow axis, disc is open (Figure 6).
Disc position
indicator mark
Disc in open
position
Figure 6: Position indicator
Table 3
