ASME B16.5 Class 150
Blind Flange

ASME B16.5 Class 150 Blind Flange Technical Drawing
DIMENSIONAL DATA
NPS Flange
OD (O)
Thickness
(T)
Bolt Circle
Dia.
No. of
Holes
Hole
Dia.
Approx.
Weight LBS
Approx.
Weight KGS
1/2 3.50 0.38 2.38 4 0.63 2 0.9
3/4 3.88 0.44 2.75 4 0.63 2 0.9
1 4.25 0.50 3.13 4 0.63 2 0.9
1-1/4 4.62 0.56 3.50 4 0.63 3 1.4
1-1/2 5.00 0.62 3.88 4 0.63 4 1.8
2 6.00 0.69 4.75 4 0.75 5 2.3
2-1/2 7.00 0.81 5.50 4 0.75 7 3.2
3 7.50 0.88 6.00 4 0.75 9 4.1
3-1/2 8.50 0.88 7.00 8 0.75 13 5.9
4 9.00 0.88 7.50 8 0.75 17 7.7
5 10.00 0.88 8.50 8 0.88 20 9
6 11.00 0.94 9.50 8 0.88 27 12.2
8 13.50 1.06 11.75 8 0.88 47 21.3
10 16.00 1.12 14.25 12 1.00 70 31.7
12 19.00 1.19 17.00 12 1.00 122.1 55.4
14 21.00 1.31 18.75 12 1.13 140 63.5
16 23.50 1.38 21.25 16 1.13 178.6 81.6
18 25.00 1.50 22.75 16 1.25 218.3 99
20 27.50 1.62 25.00 20 1.25 282.9 128.3
22 29.50 1.75 27.25 20 1.38 352.3 159.8
24 32 1.81 29.50 20 1.38 426.6 193.5

Dimensions are based on ASME B16.5 Class 150 flange requirements. Refer to the applicable standard for complete dimensional requirements.

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