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.
  • Pressure rating at atmospheric temperature is 175 psi for sizes 12” and under and 150 psi for sizes 14” and up.

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AWWA E Ring C207-01 Steel Ring Flange
Unit of Measure
1 2 

Item #

Nominal Pipe Size

Outside Diameter (A)

Thickness (T)

Inside Diameter (B)

Approximate Weight

Number of Bolt Holes

Diameter of Bolt Holes

Diameter of Bolt Circle (C)

04DRINAWW N/A 4 N/A 9.00 in N/A 0.63 in N/A 4.57 in N/A 8 lb N/A 8 N/A 0.75 in N/A 7.50 in
05DRINAWW N/A 5 N/A 10.00 in N/A 0.63 in N/A 5.66 in N/A 9 lb N/A 8 N/A 0.88 in N/A 8.50 in
06DRINAWW N/A 6 N/A 11.00 in N/A 0.69 in N/A 6.72 in N/A 11 lb N/A 8 N/A 0.88 in N/A 9.50 in
08DRINAWW N/A 8 N/A 13.50 in N/A 0.69 in N/A 8.72 in N/A 15 lb N/A 8 N/A 0.88 in N/A 11.75 in
10DRINAWW N/A 10 N/A 16.00 in N/A 0.69 in N/A 10.88 in N/A 19 lb N/A 12 N/A 1.00 in N/A 14.25 in
12DRINAWW N/A 12 N/A 19.00 in N/A 0.81 in N/A 12.88 in N/A 33 lb N/A 12 N/A 1.00 in N/A 17.00 in
14DRINAWW N/A 14 N/A 21.00 in N/A 0.94 in N/A 14.19 in N/A 47 lb N/A 12 N/A 1.13 in N/A 18.75 in
16DRINAWW N/A 16 N/A 23.50 in N/A 1.00 in N/A 16.19 in N/A 60 lb N/A 16 N/A 1.13 in N/A 21.25 in
18DRINAWW N/A 18 N/A 25.00 in N/A 1.06 in N/A 18.19 in N/A 68 lb N/A 16 N/A 1.25 in N/A 22.75 in
20DRINAWW N/A 20 N/A 27.50 in N/A 1.13 in N/A 20.19 in N/A 79 lb N/A 20 N/A 1.25 in N/A 25.00 in
22DRINAWW N/A 22 N/A 29.50 in N/A 1.19 in N/A 22.19 in N/A 90 lb N/A 20 N/A 1.38 in N/A 27.25 in
24DRINAWW N/A 24 N/A 32.00 in N/A 1.25 in N/A 24.19 in N/A 112 lb N/A 20 N/A 1.38 in N/A 29.50 in
26DRINAWW N/A 26 N/A 34.25 in N/A 1.31 in N/A 26.19 in N/A 129 lb N/A 24 N/A 1.38 in N/A 31.75 in
28DRINAWW N/A 28 N/A 36.50 in N/A 1.31 in N/A 28.19 in N/A 141 lb N/A 28 N/A 1.38 in N/A 34.00 in
30DRINAWW N/A 30 N/A 38.75 in N/A 1.38 in N/A 30.19 in N/A 172 lb N/A 28 N/A 1.38 in N/A 36.00 in
32DRINAWW N/A 32 N/A 41.75 in N/A 1.50 in N/A 32.19 in N/A 211 lb N/A 28 N/A 1.63 in N/A 38.50 in
34DRINAWW N/A 34 N/A 43.75 in N/A 1.50 in N/A 34.19 in N/A 220 lb N/A 32 N/A 1.63 in N/A 40.50 in
36DRINAWW N/A 36 N/A 46.00 in N/A 1.63 in N/A 36.19 in N/A 261 lb N/A 32 N/A 1.63 in N/A 42.75 in
38DRINAWW N/A 38 N/A 48.75 in N/A 1.63 in N/A 38.19 in N/A 301 lb N/A 32 N/A 1.63 in N/A 45.25 in
40DRINAWW N/A 40 N/A 50.75 in N/A 1.63 in N/A 40.19 in N/A 313 lb N/A 36 N/A 1.63 in N/A 47.25 in
42DRINAWW N/A 42 N/A 53.00 in N/A 1.75 in N/A 42.19 in N/A 364 lb N/A 36 N/A 1.63 in N/A 49.50 in
44DRINAWW N/A 44 N/A 55.25 in N/A 1.75 in N/A 44.19 in N/A 387 lb N/A 40 N/A 1.63 in N/A 51.75 in
46DRINAWW N/A 46 N/A 57.25 in N/A 1.75 in N/A 46.19 in N/A 404 lb N/A 40 N/A 1.63 in N/A 53.75 in
48DRINAWW N/A 48 N/A 59.50 in N/A 1.88 in N/A 48.19 in N/A 460 lb N/A 44 N/A 1.63 in N/A 56.00 in
50DRINAWW N/A 50 N/A 61.75 in N/A 2.00 in N/A 50.19 in N/A 507 lb N/A 44 N/A 1.88 in N/A 58.25 in
Unit of Measure
1 2