• Table 7 AWWA Blind Flanges
  • All dimensions are in inches.
  • Blind flanges shall be machined with center island to match the mating flange.
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Item #

Nominal Pipe Size

Working Pressure

Outside Diameter (A)

Minimum Thickness (T)

Approximate Weight (lbs)

Number of Bolt Holes

Diameter of Bolt Holes

Diameter of Bolt Circle (C)

04BLIEAWW N/A 4 N/A 275 psi N/A 9.00 N/A 1.125 N/A 23 N/A 8 N/A 0.750 N/A 7.50
05BLIEAWW N/A 5 N/A 275 psi N/A 10.00 N/A 1.188 N/A 29 N/A 8 N/A 0.875 N/A 8.50
06BLIEAWW N/A 6 N/A 275 psi N/A 11.00 N/A 1.313 N/A 39 N/A 8 N/A 0.875 N/A 9.50
08BLIEAWW N/A 8 N/A 275 psi N/A 13.50 N/A 1.500 N/A 66 N/A 8 N/A 0.875 N/A 11.75
10BLIEAWW N/A 10 N/A 275 psi N/A 16.00 N/A 1.563 N/A 96 N/A 12 N/A 1.000 N/A 14.25
12BLIEAWW N/A 12 N/A 275 psi N/A 19.00 N/A 1.750 N/A 151 N/A 12 N/A 1.000 N/A 17.00
14BLIEAWW N/A 14 N/A 275 psi N/A 21.00 N/A 1.875 N/A 196 N/A 12 N/A 1.125 N/A 18.75
16BLIEAWW N/A 16 N/A 275 psi N/A 23.50 N/A 2.000 N/A 261 N/A 16 N/A 1.125 N/A 21.25
18BLIEAWW N/A 18 N/A 275 psi N/A 25.00 N/A 2.125 N/A 313 N/A 16 N/A 1.250 N/A 22.75
20BLIEAWW N/A 20 N/A 275 psi N/A 27.50 N/A 2.375 N/A 431 N/A 20 N/A 1.250 N/A 25.00
22BLIEAWW N/A 22 N/A 275 psi N/A 29.50 N/A 2.500 N/A 520 N/A 20 N/A 1.375 N/A 27.25
24BLIEAWW N/A 24 N/A 275 psi N/A 32.00 N/A 2.625 N/A 641 N/A 20 N/A 1.375 N/A 29.50
26BLIEAWW N/A 26 N/A 275 psi N/A 34.25 N/A 2.750 N/A 767 N/A 24 N/A 1.375 N/A 31.75
28BLIEAWW N/A 28 N/A 275 psi N/A 36.50 N/A 2.750 N/A 871 N/A 28 N/A 1.375 N/A 34.00
30BLIEAWW N/A 30 N/A 275 psi N/A 38.75 N/A 2.875 N/A 1023 N/A 28 N/A 1.375 N/A 36.00
32BLIEAWW N/A 32 N/A 275 psi N/A 41.75 N/A 3.000 N/A 1236 N/A 28 N/A 1.625 N/A 38.50
34BLIEAWW N/A 34 N/A 275 psi N/A 43.75 N/A 3.050 N/A 1379 N/A 32 N/A 1.625 N/A 40.50
36BLIEAWW N/A 36 N/A 275 psi N/A 46.00 N/A 3.209 N/A 1599 N/A 32 N/A 1.625 N/A 42.75
38BLIEAWW N/A 38 N/A 275 psi N/A 48.75 N/A 3.394 N/A 1894 N/A 32 N/A 1.625 N/A 45.25
40BLIEAWW N/A 40 N/A 275 psi N/A 50.75 N/A 3.533 N/A 2132 N/A 36 N/A 1.625 N/A 47.25
42BLIEAWW N/A 42 N/A 275 psi N/A 53.00 N/A 3.695 N/A 2427 N/A 36 N/A 1.625 N/A 49.50
44BLIEAWW N/A 44 N/A 275 psi N/A 55.25 N/A 3.857 N/A 2747 N/A 40 N/A 1.625 N/A 51.75
46BLIEAWW N/A 46 N/A 275 psi N/A 57.25 N/A 3.997 N/A 3052 N/A 40 N/A 1.625 N/A 53.75
48BLIEAWW N/A 48 N/A 275 psi N/A 59.50 N/A 4.159 N/A 3424 N/A 44 N/A 1.625 N/A 56.00
50BLIEAWW N/A 50 N/A 275 psi N/A 61.75 N/A 4.327 N/A 3830 N/A 44 N/A 1.875 N/A 58.25
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