ANSI Class 150
Nominal Pipe Size
1/2
3/4
1
1 1/2
2
2 1/2
3
4
6
8
10
Flange Diameter
Raised Face Diameter
Flange thickness, min.
Bolt circle diameter
Number of bolts
Bolt hole diameter
3.50
1.38
0.44
2.38
4
0.62
3.88
1.69
0.50
2.75
4
0.62
4.25
2.00
0.56
3.12
4
0.62
5.00
2.88
0.69
3.88
4
0.62
6.00
3.62
0.75
4.75
4
0.75
7.00
4.12
0.88
5.50
4
0.75
7.50
5.00
0.94
6.00
4
0.75
9.00
6.19
0.94
7.50
8
0.75
11.00
8.50
1.00
9.50
8
0.88
13.50
10.62
1.12
11.75
8
0.88
16.00
12.75
1.19
14.25
12
1.00
ANSI Class 300
Nominal Pipe Size
1/2
3/4
1
1 1/2
2
2 1/2
3
4
6
8
10
Flange Diameter
Raised Face Diameter
Flange thickness, min.
Bolt circle diameter
Number of bolts
Bolt hole diameter
3.75
1.38
0.56
2.62
4
0.62
4.62
1.69
0.62
3.25
4
0.75
4.88
2.00
0.69
3.50
4
0.75
6.12
2.88
0.81
4.50
4
0.88
6.50
3.62
0.88
5.00
8
0.75
7.50
4.12
1.00
5.88
8
0.88
8.25
5.00
1.12
6.62
8
0.88
10.00
6.19
1.25
7.88
8
0.88
12.50
8.50
1.44
10.62
12
0.88
15.00
10.62
1.62
13.00
12
1.00
17.50
12.75
1.88
15.25
16
1.12
ANSI Class 600
Nominal Pipe Size
1/2
3/4
1
1 1/2
2
2 1/2
3
4
6
8
10
Flange Diameter
Raised Face Diameter
Flange thickness, min.
Bolt circle diameter
Number of bolts
Bolt hole diameter
3.75
1.38
0.56
2.62
4
0.62
4.62
1.69
0.62
3.25
4
0.75
4.88
2.00
0.69
3.50
4
0.75
6.12
2.88
0.88
4.50
4
0.88
6.50
3.62
1.00
5.00
8
0.75
7.50
4.12
1.12
5.88
8
0.88
8.25
5.00
1.12
6.62
8
0.88
10.75
6.19
1.50
8.50
8
1.00
14.00
8.50
1.88
11.50
12
1.12
16.50
10.62
2.19
13.75
12
1.25
20.00
12.75
2.50
17.00
16
1.38
ANSI Class 900
Nominal Pipe Size
1/2
3/4
1
1 1/2
2
2 1/2
3
4
6
8
10
Flange Diameter
Raised Face Diameter
Flange thickness, min.
Bolt circle diameter
Number of bolts
Bolt hole diameter
4.75
1.38
0.88
3.25
4
0.88
5.12
1.69
1.00
3.50
4
0.88
5.88
2.00
1.12
4.00
4
1.00
7.00
2.88
1.25
4.88
4
1.12
8.50
3.62
1.50
6.50
8
1.00
9.62
4.12
1.62
7.50
8
1.12
9.50
5.00
1.50
7.50
8
1.12
11.50
6.19
1.75
9.25
8
1.25
15.00
8.50
2.19
12.50
12
1.25
18.50
10.62
2.50
15.50
12
1.50
21.50
12.75
2.75
18.50
16
1.50
ANSI Class 1500
Nominal Pipe Size
1/2
3/4
1
1 1/2
2
2 1/2
3
4
6
8
10
Flange Diameter
Raised Face Diameter
Flange thickness, min.
Bolt circle diameter
Number of bolts
Bolt hole diameter
4.75
1.38
0.88
3.25
4
0.88
5.12
1.69
1.00
3.50
4
0.88
5.88
2.00
1.12
4.00
4
1.00
7.00
2.88
1.25
4.88
4
1.12
8.50
3.62
1.50
6.50
8
1.00
9.62
4.12
1.62
7.50
8
1.12
10.50
5.00
1.88
8.00
8
1.25
12.50
6.19
2.12
9.50
8
1.38
15.50
8.50
3.25
12.50
12
1.50
19.00
10.62
3.62
15.50
12
1.75
23.00
12.75
4.25
19.00
12
2.00
ANSI Class 2500
Nominal Pipe Size
1/2
3/4
1
1 1/2
2
2 1/2
3
4
6
8
10
Flange Diameter
Raised Face Diameter
Flange thickness, min.
Bolt circle diameter
Number of bolts
Bolt hole diameter
5.25
1.38
1.19
3.50
4
0.88
5.50
1.69
1.25
3.75
4
0.88
6.25
2.00
1.38
4.25
4
1.00
8.00
2.88
1.75
5.75
4
1.25
9.25
3.62
2.00
6.75
8
1.12
10.50
4.12
2.25
7.75
8
1.25
12.00
5.00
2.62
9.00
8
1.38
14.00
6.19
3.00
10.75
8
1.62
19.00
8.50
4.25
14.50
8
2.12
21.75
10.62
5.00
17.25
12
2.12
26.50
12.75
6.50
21.25
12
2.62
Page 199
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