Dimensions of Class 150 RF Threaded Flanges

Expired

All dimensions are in "mm" unless noted otherwise.

Dimensions of Class 150 RF Threaded Flanges as per ASME B16.5.

Threaded Flange

Nominal
Pipe Size		 Outside Dia
of Flange
(D)		 Thick of
Flange
(B)		 Dia of
Raised Face
(G)		 Dia of
Hub at Base
(A)		 Length
thru Hub
(H)		 Min Thread
Length
(T)		 Min Counter
Bore
(Q)		 No of
Holes		 Dia of
Holes
(L)		 Dia of
Bolts
(inch)		 Dia of
Bolt Circle
(K)		 Approx
Weight
(kg)
1/2 88.9 11.2 35.1 30.2 15.7 15.7   4 15.7 1/2 60.5 0.5
3/4 98.6 12.7 42.9 38.1 15.7 15.7   4 15.7 1/2 69.9 1
1 108 14.2 50.8 49.3 17.5 17.5   4 15.7 1/2 79.2 1
1-1/4 117.3 15.7 63.5 58.7 20.6 20.6   4 15.7 1/2 88.9 1
1-1/2 127 17.5 73.2 65 22.4 22.4   4 15.7 1/2 98.6 1
2 152.4 19.1 91.9 77.7 25.4 25.4   4 19.1 5/8 120.7 2
2-1/2 177.8 22.4 104.6 90.4 28.4 28.4   4 19.1 5/8 139.7 3
3 190.5 23.9 127 108 30.2 30.2   4 19.1 5/8 152.4 4
3-1/2 215.9 23.9 139.7 122.2 31.8 31.8   8 19.1 5/8 177.8 5
4 228.6 23.9 157.2 134.9 33.3 33.3   8 19.1 5/8 190.5 6
5 254 23.9 185.7 163.6 36.6 36.6   8 22.4 3/4 215.9 7
6 279.4 25.4 215.9 192 39.6 39.6   8 22.4 3/4 241.3 9
8 342.9 28.4 269.7 246.1 44.5 44.5   8 22.4 3/4 298.5 14
10 406.4 30.2 323.9 304.8 49.3 49.3   12 25.4 7/8 362 20
12 482.6 31.8 381 365.3 55.6 55.6   12 25.4 7/8 431.8 29
14 533.4 35.1 412.8 400.1 57.2 57.2   12 28.4 1 476.3 41
16 596.9 36.6 469.9 457.2 63.5 63.5   16 28.4 1 539.8 44
18 635 39.6 533.4 505 68.3 68.3   16 31.8 1-1/8 577.9 59
20 698.5 42.9 584.2 558.8 73.2 73.2   20 31.8 1-1/8 635 75
24 812.8 47.8 692.2 663.4 82.6 82.6   20 35.1 1-1/4 749.3 100
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