Coastal Flange
Coastal Flange
11906 FM 529
Jersey Village, TX 77041
Phone: 800.643.9063
Fax: 713.937.3471
Email: sales@coastalflange.com
Website: www.coastalflange.com
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  • All dimensions are in inches.
  • Blind flanges shall be machined with center island to match the mating flange.

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Table 7 AWWA Blind Flanges
Unit of Measure
1 

Item #

Nominal Pipe Size

Working Pressure

Outside Diameter (O)

Minimum Thickness (T)

Approximate Weight

Number of Bolt Holes

Diameter of Bolt Holes

Diameter of Bolt Circle (C)

04BLIFAWW N/A 4 N/A 300 psi N/A 10.00 in N/A 1.13 in N/A 28 lb N/A 8 N/A 0.88 in N/A 7.88 in
05BLIFAWW N/A 5 N/A 300 psi N/A 11.00 in N/A 1.21 in N/A 36 lb N/A 8 N/A 0.88 in N/A 9.25 in
06BLIFAWW N/A 6 N/A 300 psi N/A 12.50 in N/A 1.31 in N/A 50 lb N/A 12 N/A 0.88 in N/A 10.62 in
08BLIFAWW N/A 8 N/A 300 psi N/A 15.00 in N/A 1.31 in N/A 72 lb N/A 12 N/A 1.00 in N/A 13.00 in
10BLIFAWW N/A 10 N/A 300 psi N/A 17.50 in N/A 1.50 in N/A 111 lb N/A 16 N/A 1.13 in N/A 15.25 in
12BLIFAWW N/A 12 N/A 300 psi N/A 20.50 in N/A 1.63 in N/A 164 lb N/A 16 N/A 1.25 in N/A 17.75 in
14BLIFAWW N/A 14 N/A 300 psi N/A 23.00 in N/A 1.94 in N/A 243 lb N/A 20 N/A 1.25 in N/A 20.25 in
16BLIFAWW N/A 16 N/A 300 psi N/A 25.50 in N/A 2.14 in N/A 328 lb N/A 20 N/A 1.38 in N/A 22.50 in
18BLIFAWW N/A 18 N/A 300 psi N/A 28.00 in N/A 2.25 in N/A 414 lb N/A 24 N/A 1.38 in N/A 24.75 in
20BLIFAWW N/A 20 N/A 300 psi N/A 30.50 in N/A 2.33 in N/A 521 lb N/A 24 N/A 1.38 in N/A 27.00 in
22BLIFAWW N/A 22 N/A 300 psi N/A 33.00 in N/A 2.50 in N/A 651 lb N/A 24 N/A 1.38 in N/A 29.25 in
24BLIFAWW N/A 24 N/A 300 psi N/A 36.00 in N/A 2.69 in N/A 830 lb N/A 24 N/A 1.63 in N/A 32.00 in
26BLIFAWW N/A 26 N/A 300 psi N/A 38.25 in N/A 3.00 in N/A 1038 lb N/A 28 N/A 1.88 in N/A 34.50 in
28BLIFAWW N/A 28 N/A 300 psi N/A 40.75 in N/A 3.13 in N/A 1226 lb N/A 28 N/A 1.88 in N/A 37.00 in
30BLIFAWW N/A 30 N/A 300 psi N/A 43.00 in N/A 3.17 in N/A 1380 lb N/A 28 N/A 1.88 in N/A 39.25 in
32BLIFAWW N/A 32 N/A 300 psi N/A 45.25 in N/A 3.33 in N/A 1603 lb N/A 28 N/A 1.88 in N/A 41.50 in
34BLIFAWW N/A 34 N/A 300 psi N/A 47.50 in N/A 3.48 in N/A 1839 lb N/A 28 N/A 1.88 in N/A 43.50 in
36BLIFAWW N/A 36 N/A 300 psi N/A 50.00 in N/A 3.67 in N/A 2146 lb N/A 32 N/A 2.13 in N/A 46.00 in
38BLIFAWW N/A 38 N/A 300 psi N/A 52.25 in N/A 3.82 in N/A 2431 lb N/A 32 N/A 2.13 in N/A 48.00 in
40BLIFAWW N/A 40 N/A 300 psi N/A 54.25 in N/A 3.98 in N/A 2730 lb N/A 36 N/A 2.13 in N/A 50.25 in
42BLIFAWW N/A 42 N/A 300 psi N/A 57.00 in N/A 4.17 in N/A 3151 lb N/A 36 N/A 2.13 in N/A 52.75 in
44BLIFAWW N/A 44 N/A 300 psi N/A 59.25 in N/A 4.34 in N/A 3535 lb N/A 36 N/A 2.13 in N/A 55.00 in
46BLIFAWW N/A 46 N/A 300 psi N/A 61.50 in N/A 4.51 in N/A 3949 lb N/A 40 N/A 2.13 in N/A 57.25 in
48BLIFAWW N/A 48 N/A 300 psi N/A 65.00 in N/A 4.78 in N/A 4671 lb N/A 40 N/A 2.13 in N/A 60.75 in
Unit of Measure
1