Class 150
Nom.
Pipe
Size
Flange
Dia.
(0)
Flange
Thick
(Q)
Hub Dia. At Base
(X)
Raised
Face Dia.
(RF)
No.
of
Holes
Dia.
Of
Bolts
Dia. Of Bolt Circle
(BC)
Bore
Dia.
(B)
Length
Thru Hub
(L)
1/2 3-1/2 7/16 1-3/16 1-3/8 4 1/2 2-3/8 0.88 5/8
3/4 3-7/8 1/2 1-1/2 1-11/16 4 1/2 2-3/4 1.09 5/8
1 4-1/4 9/16 1-15/16 2 4 1/2 3-1/8 1.36 11/16
1-1/4 4-5/8 5/8 2-5/16 2-1/2 4 1/2 3-1/2 1.70 13/16
1-1/2 5 11/16 2-9/16 2-7/8 4 1/2 3-7/8 1.95 7/8
2 6 3/4 3-1/16 3-5/8 4 5/8 4-3/4 2.44 1
2-1/2 7 7/8 3-9/16 4-1/8 4 5/8 5-1/2 2.94 1-1/8
3 7-1/2 15/16 4-1/4 5 4 5/8 6 3.57 1-3/16
3-1/2 8-1/2 15/16 4-13/16 5-1/2 8 5/8 7 4.07 1-1/4
4 9 15/16 5-5/16 6-3/16 8 5/8 7-1/2 4.57 1-5/16
5 10 15/16 6-7/16 7-5/16 8 3/4 8-1/2 5.66 1-7/16
6 11 1 7-9/16 8-1/2 8 3/4 9-1/2 6.72 1-9/16
8 13-1/2 1-1/8 9-11/16 10-5/8 8 3/4 11-3/4 8.72 1-3/4
10 16 1-3/16 12 12-3/4 12 7/8 14-1/4 10.88 1-15/16
12 19 1-1/4 14-3/8 15 12 7/8 17 12.88 2-3/16
14 21 1-3/8 15-3/4 16-1/4 12 1 18-3/4 14.14 2-1/4
16 23-1/2 1-7/16 18 18-1/2 16 1 21-1/4 16.16 2-1/2
18 25 1-9/16 19-7/8 21 16 1-1/8 22-3/4 18.18 2-11/16
20 27-1/2 1-11/16 22 23 20 1-1/8 25 20.20 2-7/8
24 32 1-7/8 26-1/8 27-1/4 20 1-1/4 29-1/2 24.25 3-1/4