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VH2, VH3, VH4, VH5, VH6, VH7, VH8 ANSI 150 CLASS HIGH PERFORMANCE BUTTERFLY VALVES
LUG BODY
HEX HEAD MACHINE BOLTS
Fig. 13. Bolting.
Bolting and torque recommendations are made without warranty, and apply only to steel weld-neck or slip-on flanges.
The use of lock washers and/or lubrication with the bolting will affect stated torque values.
Length of machine bolts based on:
1. Gasket thickness of 0.06 inches.
2. Minimum flange thickness of weld-neck flanges per ANSI B16.5 and B16.47 Series A.
* Variation to specified bolting length may result in improper installation.
A
Flange
Nominal Pipe
Diameter
Size (inches)
(inches)
2
6
2.5
7
3
7.5
4
9
5
10
6
11
8
13.5
10
16
12
19
14
21
16
23.5
18
25
20
27.5
24
32
LUG BODY
STUDS and NUTS
Table 12. Flange Dimensions.
FLANGES
B
Flange
Diameter of
Thickness
(inches)
0.75
0.875
0.9375
0.9375
0.9375
1
1.125
1.1875
1.25
1.375
1.4375
1.625
1.6875
1.875
21
DRILLING
C
D
Diameter of
Bolt Circle
Bolt Holes
(inches)
(inches)
4.75
0.75
5.5
0.75
6
0.75
7.5
0.75
8.5
0.875
9.5
0.875
11.75
0.875
14.25
1
17
1
18.75
1.125
21.25
1.125
22.75
1.25
25
1.25
29.5
1.375
Fig. 14. Flanges.
BOLTING
Number of
Diameter of
Bolts
4
4
4
8
8
8
8
12
12
12
16
16
20
20
Bolts
5/8
5/8
5/8
5/8
3/4
3/4
3/4
7/8
7/8
1
1
1-1/8
1-1/8
1-1/4
31-00191EF—02
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