ANSI B16.5 Class 2500 Blind Flanges

    • All dimensions are in inches
    • These flanges will be furnished with a 1/4″ raised face unless otherwise specified.
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(Size Chart)

Nominal Pipe Size Outside Diameter (O) Bolt Circle (W) Raised Face Diameter (R) Number of Holes Diameter of Holes Thickness (T) Approximate Weight (lbs)
1/2 5.25 3.50 1.38 4 0.88 1.19 7
3/4 5.50 3.75 1.69 4 0.88 1.25 8
1 6.25 4.25 2.00 4 1.00 1.38 11
1 1/4 7.25 5.12 2.50 4 1.13 1.50 17
1 1/2 8.00 5.75 2.88 4 1.25 1.75 23
2 9.25 6.75 3.62 8 1.13 2.00 39
2 1/2 10.50 7.75 4.12 8 1.25 2.25 56
3 12.00 9.00 5.00 8 1.38 2.62 86
4 14.00 10.75 6.19 8 1.63 3.00 135
5 16.50 12.75 7.31 8 1.88 3.62 225
6 19.00 14.50 8.50 8 2.13 4.25 345
8 21.75 17.25 10.62 12 2.13 5.00 530
10 26.50 21.25 12.75 12 2.63 6.50 1025
12 30.00 24.38 15.00 12 2.88 7.25 1300
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