AWWA C207-07 flange standard
What is AWWA C207 flange standard?
Table of Contents
- What is AWWA C207 flange standard?
- Dimesions of AWWA C207-07 Steel Flanges for pipes
- AWWA Class B Steel Hub type Slip-on Flanges
- AWWA Class D Steel Hub type Slip-on Flanges
- AWWA Class E Steel Hub type Slip-on Flanges
- AWWA Class B Ring type Slip-on & Blind Flanges
- AWWA Class D Ring type Slip-on & Blind Flanges
- AWWA Class E Ring type Slip-on & Blind Flanges
- AWWA Class F Ring type Slip-on & Blind Flanges
AWWA C207 is a standard developed by the American Water Works Association (AWWA) that specifies the dimensions and materials for steel pipe flanges used in waterworks service.
This standard covers flanges in sizes ranging from 4 inches (100 mm) to 144 inches (3,600 mm).
The purpose of this standard is to provide guidelines for the proper selection and use of steel pipe flanges, including materials, design, dimensions, and marking requirements.
The standard includes specifications for both slip-on flanges and blind flanges, with a variety of facing types and pressure ratings.
The metal materials used for flanges under this standard must conform to the requirements of ASTM A105/A105M or ASTM A181/A181M.
The flanges must be marked with the manufacturer’s name or trademark, nominal pipe size, flange rating, material specification, heat number, and other pertinent information.
The AWWA C207 standard is an important reference for engineers, designers, and manufacturers of steel pipe flanges used in waterworks service, providing critical information to ensure safe and reliable performance of water systems.
The flange technical information in AWWA standard system is ANSI/AWWA C207.
ANSI/AWWA C207: STEEL PIPE FLANGES FOR WATERWORKS SERVICE—SIZES 4 IN. THROUGH 144 IN. (100 MM THROUGH 3,600 MM).
Dimesions of AWWA C207-07 Steel Flanges for pipes
AWWA Class B Steel Hub type Slip-on Flanges
Dimensions in Inches
| Nom. size (“) | Outside Ø (OD) | Slip-on Bore (ID) | No. of Bolt Holes | Ø of Holes |
Bolt
Circle
(BC)
|
Flange Dimensions | Weight (lbs) | ||
| T | L | E | |||||||
| 4 | 9 | 4.57 | 8 | 0.75 | 7.5 | 0.5 | 0.875 | 5.312 | 12 |
| 5 | 10 | 5.66 | 8 | 0.875 | 8.5 | 0.562 | 1.25 | 6.312 | – |
| 6 | 11 | 6.72 | 8 | 0.875 | 9.5 | 0.562 | 1.25 | 7.562 | 13 |
| 8 | 13.5 | 8.72 | 8 | 0.875 | 11.75 | 0.562 | 1.25 | 9.688 | 18 |
| 10 | 16 | 10.88 | 12 | 1 | 14.25 | 0.688 | 1.25 | 12 | 26 |
| 12 | 19 | 12.88 | 12 | 1 | 17 | 0.688 | 1.25 | 14.375 | 42 |
| 14 | 21 | 14.19 | 12 | 1.125 | 18.75 | 0.75 | 1.25 | 15.75 | 44 |
| 16 | 23.5 | 16.19 | 16 | 1.125 | 21.25 | 0.75 | 1.25 | 18 | 58 |
| 18 | 25 | 18.19 | 16 | 1.25 | 22.75 | 0.75 | 1.25 | 19.875 | 59 |
| 20 | 27.5 | 20.19 | 20 | 1.25 | 25 | 0.75 | 1.25 | 22 | 69 |
| 22 | 29.5 | 22.19 | 20 | 1.375 | 27.25 | 1 | 1.75 | 24.25 | – |
| 24 | 32 | 24.19 | 20 | 1.375 | 29.5 | 1 | 1.75 | 26.125 | 115 |
| 26 | 34.25 | 26.19 | 24 | 1.375 | 31.75 | 1 | 1.75 | 28.5 | – |
| 28 | 36.5 | 28.19 | 28 | 1.375 | 34 | 1 | 1.75 | 30.5 | – |
| 30 | 38.75 | 30.19 | 28 | 1.375 | 36 | 1 | 1.75 | 32.5 | 150 |
| 32 | 41.75 | 32.19 | 28 | 1.625 | 38.5 | 1.125 | 1.75 | 34.75 | – |
| 36 | 46 | 36.19 | 32 | 1.625 | 42.75 | 1.125 | 1.75 | 38.75 | 235 |
| 38 | 48.75 | 38.19 | 32 | 1.625 | 45.25 | 1.125 | 1.75 | 40.75 | – |
| 40 | 50.75 | 40.19 | 36 | 1.625 | 47.25 | 1.125 | 1.75 | 43 | – |
| 42 | 53 | 42.19 | 36 | 1.625 | 49.5 | 1.25 | 1.75 | 45 | 330 |
| 44 | 55.25 | 44.19 | 40 | 1.625 | 51.75 | 1.25 | 2.25 | 47 | – |
| 48 | 59.5 | 48.19 | 44 | 1.625 | 56 | 1.375 | 2.5 | 51 | 425 |
| 54 | 66.25 | 54.19 | 44 | 1.875 | 62.75 | 1.375 | 2.5 | 57 | 500 |
| 60 | 73 | 60.19 | 52 | 1.875 | 69.25 | 1.5 | 2.75 | 63 | 640 |
| 66 | 80 | 66.19 | 52 | 1.875 | 76 | 1.5 | 2.75 | 69 | – |
| 72 | 86.5 | 72.19 | 60 | 1.875 | 82.5 | 1.5 | 2.75 | 75 | 850 |
| 78 | 93 | 78.19 | 64 | 2.125 | 89 | 1.75 | 3 | 81.25 | – |
| 84 | 99.75 | 84.19 | 64 | 2.125 | 95.5 | 1.75 | 3 | 87.5 | 1225 |
| 90 | 106.5 | 90.19 | 68 | 2.438 | 102 | 2 | 3.25 | 93.75 | – |
| 96 | 113.25 | 96.19 | 68 | 2.438 | 108.5 | 2 | 3.25 | 100 | 1725 |
AWWA Class D Steel Hub type Slip-on Flanges
Dimensions in Inches
| Nom. size (“) | Outside Ø (OD) | Slip-on Bore (ID) | No. of Bolt Holes | Ø of Holes |
Bolt
Circle
(BC)
|
Flange Dimensions | Weight (lbs) | ||
| T | L | E | |||||||
| 4 | 9 | 4.57 | 8 | 0.75 | 7.5 | 0.5 | 0.875 | 5.312 | 12 |
| 5 | 10 | 5.66 | 8 | 0.875 | 8.5 | 0.562 | 1.25 | 6.312 | – |
| 6 | 11 | 6.72 | 8 | 0.875 | 9.5 | 0.562 | 1.25 | 7.562 | 13 |
| 8 | 13.5 | 8.72 | 8 | 0.875 | 11.75 | 0.562 | 1.25 | 9.688 | 18 |
| 10 | 16 | 10.88 | 12 | 1 | 14.25 | 0.688 | 1.25 | 12 | 26 |
| 12 | 19 | 12.88 | 12 | 1 | 17 | 0.688 | 1.25 | 14.375 | 42 |
| 14 | 21 | 14.19 | 12 | 1.125 | 18.75 | 0.75 | 1.25 | 15.75 | 44 |
| 16 | 23.5 | 16.19 | 16 | 1.125 | 21.25 | 0.75 | 1.25 | 18 | 58 |
| 18 | 25 | 18.19 | 16 | 1.25 | 22.75 | 0.75 | 1.25 | 19.875 | 59 |
| 20 | 27.5 | 20.19 | 20 | 1.25 | 25 | 0.75 | 1.25 | 22 | 69 |
| 22 | 29.5 | 22.19 | 20 | 1.375 | 27.25 | 1 | 1.75 | 24.25 | – |
| 24 | 32 | 24.19 | 20 | 1.375 | 29.5 | 1 | 1.75 | 26.125 | 115 |
| 26 | 34.25 | 26.19 | 24 | 1.375 | 31.75 | 1 | 1.75 | 28.5 | – |
| 28 | 36.5 | 28.19 | 28 | 1.375 | 34 | 1 | 1.75 | 30.5 | – |
| 30 | 38.75 | 30.19 | 28 | 1.375 | 36 | 1 | 1.75 | 32.5 | 150 |
| 32 | 41.75 | 32.19 | 28 | 1.625 | 38.5 | 1.125 | 1.75 | 34.75 | – |
| 36 | 46 | 36.19 | 32 | 1.625 | 42.75 | 1.125 | 1.75 | 38.75 | 235 |
| 38 | 48.75 | 38.19 | 32 | 1.625 | 45.25 | 1.125 | 1.75 | 40.75 | – |
| 40 | 50.75 | 40.19 | 36 | 1.625 | 47.25 | 1.125 | 1.75 | 43 | – |
| 42 | 53 | 42.19 | 36 | 1.625 | 49.5 | 1.25 | 1.75 | 45 | 330 |
| 44 | 55.25 | 44.19 | 40 | 1.625 | 51.75 | 1.25 | 2.25 | 47 | – |
| 48 | 59.5 | 48.19 | 44 | 1.625 | 56 | 1.375 | 2.5 | 51 | 425 |
| 54 | 66.25 | 54.19 | 44 | 1.875 | 62.75 | 1.375 | 2.5 | 57 | 500 |
| 60 | 73 | 60.19 | 52 | 1.875 | 69.25 | 1.5 | 2.75 | 63 | 640 |
| 66 | 80 | 66.19 | 52 | 1.875 | 76 | 1.5 | 2.75 | 69 | – |
| 72 | 86.5 | 72.19 | 60 | 1.875 | 82.5 | 1.5 | 2.75 | 75 | 850 |
| 78 | 93 | 78.19 | 64 | 2.125 | 89 | 1.75 | 3 | 81.25 | – |
| 84 | 99.75 | 84.19 | 64 | 2.125 | 95.5 | 1.75 | 3 | 87.5 | 1225 |
| 90 | 106.5 | 90.19 | 68 | 2.438 | 102 | 2 | 3.25 | 93.75 | – |
| 96 | 113.25 | 96.19 | 68 | 2.438 | 108.5 | 2 | 3.25 | 100 | 1725 |
AWWA Class E Steel Hub type Slip-on Flanges
Dimensions in Inches
| Nom. size (“) | Outside Ø (OD) | Slip-on Bore (ID) | No. of Bolt Holes | Ø of Holes |
Bolt
Circle
(BC)
|
Flange Dimensions | Weight (lbs) | ||
| T | L | E | |||||||
| 4 | 9 | 4.57 | 8 | 0.75 | 7.5 | 0.938 | 1.312 | 5.312 | 13 |
| 5 | 10 | 5.66 | 8 | 0.875 | 8.5 | 0.938 | 1.438 | 6.438 | – |
| 6 | 11 | 6.72 | 8 | 0.875 | 9.5 | 1 | 1.562 | 7.562 | 19 |
| 8 | 13.5 | 8.72 | 8 | 0.875 | 11.75 | 1.125 | 1.75 | 9.688 | 30 |
| 10 | 16 | 10.88 | 12 | 1 | 14.25 | 1.188 | 1.938 | 12 | 43 |
| 12 | 19 | 12.88 | 12 | 1 | 17 | 1.25 | 2.188 | 14.375 | 64 |
| 14 | 21 | 14.19 | 12 | 1.125 | 18.75 | 1.375 | 2.25 | 15.75 | 85 |
| 16 | 23.5 | 16.19 | 16 | 1.125 | 21.25 | 1.438 | 2.5 | 18 | 93 |
| 18 | 25 | 18.19 | 16 | 1.25 | 22.75 | 1.562 | 2.688 | 19.875 | 120 |
| 20 | 27.5 | 20.19 | 20 | 1.25 | 25 | 1.688 | 2.875 | 22 | 155 |
| 22 | 29.5 | 22.19 | 20 | 1.375 | 27.25 | 1.812 | 3.125 | 24.25 | – |
| 24 | 32 | 24.19 | 20 | 1.375 | 29.5 | 1.875 | 3.25 | 26.125 | 210 |
| 26 | 34.25 | 26.19 | 24 | 1.375 | 31.75 | 2 | 3.375 | 28.5 | – |
| 28 | 36.5 | 28.19 | 28 | 1.375 | 34 | 2.062 | 3.438 | 30.75 | – |
| 30 | 38.75 | 30.19 | 28 | 1.375 | 36 | 2.125 | 3.5 | 32.75 | 305 |
| 32 | 41.75 | 32.19 | 28 | 1.625 | 38.5 | 2.25 | 3.625 | 35 | – |
| 36 | 46 | 36.19 | 32 | 1.625 | 42.75 | 2.375 | 3.75 | 39.25 | 450 |
| 38 | 48.75 | 38.19 | 32 | 1.625 | 45.25 | 2.375 | 3.75 | 41.75 | – |
| 40 | 50.75 | 40.19 | 36 | 1.625 | 47.25 | 2.5 | 3.875 | 43.75 | – |
| 42 | 53 | 42.19 | 36 | 1.625 | 49.5 | 2.625 | 4 | 46 | 605 |
| 44 | 55.25 | 44.19 | 40 | 1.625 | 51.75 | 2.625 | 4 | 48 | – |
| 48 | 59.5 | 48.19 | 44 | 1.625 | 56 | 2.75 | 4.125 | 52.25 | 800 |
| 54 | 66.25 | 54.19 | 44 | 1.875 | 62.75 | 3 | 4.375 | 58.75 | 1025 |
| 60 | 73 | 60.19 | 52 | 1.875 | 69.25 | 3.125 | 4.5 | 65.25 | 1250 |
| 66 | 80 | 66.19 | 52 | 1.875 | 76 | 3.375 | 4.875 | 71.5 | – |
| 72 | 86.5 | 72.19 | 60 | 1.875 | 82.5 | 3.5 | 5 | 78.5 | 1925 |
| 78 | 93 | 78.19 | 64 | 2.125 | 89 | 3.875 | 5.375 | 84.5 | – |
| 84 | 99.75 | 84.19 | 64 | 2.125 | 95.5 | 3.875 | 5.375 | 90.5 | 2600 |
| 90 | 106.5 | 90.19 | 68 | 2.438 | 102 | 4.25 | 5.75 | 96.75 | – |
| 96 | 113.25 | 96.19 | 68 | 2.438 | 108.5 | 4.25 | 5.75 | 102.75 | 3275 |
AWWA Class B Ring type Slip-on & Blind Flanges
Dimensions in Inches
| Nom.size | Outside Ø (OD) | Slip-on Bore (ID) | No. of Bolt Holes | Ø of Holes | Ø Bolt Circle (BC) | Thickness (T) | Weight (lbs) | ||
| Slip-on | Blind | Slip-on | Blind | ||||||
| 4 | 9 | 4.57 | 8 | 0.75 | 7.5 | 0.938 | 1.312 | 5.312 | 13 |
| 5 | 10 | 5.66 | 8 | 0.875 | 8.5 | 0.938 | 1.438 | 6.438 | – |
| 6 | 11 | 6.72 | 8 | 0.875 | 9.5 | 1 | 1.562 | 7.562 | 19 |
| 8 | 13.5 | 8.72 | 8 | 0.875 | 11.75 | 1.125 | 1.75 | 9.688 | 30 |
| 10 | 16 | 10.88 | 12 | 1 | 14.25 | 1.188 | 1.938 | 12 | 43 |
| 12 | 19 | 12.88 | 12 | 1 | 17 | 1.25 | 2.188 | 14.375 | 64 |
| 14 | 21 | 14.19 | 12 | 1.125 | 18.75 | 1.375 | 2.25 | 15.75 | 85 |
| 16 | 23.5 | 16.19 | 16 | 1.125 | 21.25 | 1.438 | 2.5 | 18 | 93 |
| 18 | 25 | 18.19 | 16 | 1.25 | 22.75 | 1.562 | 2.688 | 19.875 | 120 |
| 20 | 27.5 | 20.19 | 20 | 1.25 | 25 | 1.688 | 2.875 | 22 | 155 |
| 22 | 29.5 | 22.19 | 20 | 1.375 | 27.25 | 1.812 | 3.125 | 24.25 | – |
| 24 | 32 | 24.19 | 20 | 1.375 | 29.5 | 1.875 | 3.25 | 26.125 | 210 |
| 26 | 34.25 | 26.19 | 24 | 1.375 | 31.75 | 2 | 3.375 | 28.5 | – |
| 28 | 36.5 | 28.19 | 28 | 1.375 | 34 | 2.062 | 3.438 | 30.75 | – |
| 30 | 38.75 | 30.19 | 28 | 1.375 | 36 | 2.125 | 3.5 | 32.75 | 305 |
| 32 | 41.75 | 32.19 | 28 | 1.625 | 38.5 | 2.25 | 3.625 | 35 | – |
| 36 | 46 | 36.19 | 32 | 1.625 | 42.75 | 2.375 | 3.75 | 39.25 | 450 |
| 38 | 48.75 | 38.19 | 32 | 1.625 | 45.25 | 2.375 | 3.75 | 41.75 | – |
| 40 | 50.75 | 40.19 | 36 | 1.625 | 47.25 | 2.5 | 3.875 | 43.75 | – |
| 42 | 53 | 42.19 | 36 | 1.625 | 49.5 | 2.625 | 4 | 46 | 605 |
| 44 | 55.25 | 44.19 | 40 | 1.625 | 51.75 | 2.625 | 4 | 48 | – |
| 48 | 59.5 | 48.19 | 44 | 1.625 | 56 | 2.75 | 4.125 | 52.25 | 800 |
| 54 | 66.25 | 54.19 | 44 | 1.875 | 62.75 | 3 | 4.375 | 58.75 | 1025 |
| 60 | 73 | 60.19 | 52 | 1.875 | 69.25 | 3.125 | 4.5 | 65.25 | 1250 |
| 66 | 80 | 66.19 | 52 | 1.875 | 76 | 3.375 | 4.875 | 71.5 | – |
| 72 | 86.5 | 72.19 | 60 | 1.875 | 82.5 | 3.5 | 5 | 78.5 | 1925 |
| 78 | 93 | 78.19 | 64 | 2.125 | 89 | 3.875 | 5.375 | 84.5 | – |
| 84 | 99.75 | 84.19 | 64 | 2.125 | 95.5 | 3.875 | 5.375 | 90.5 | 2600 |
| 90 | 106.5 | 90.19 | 68 | 2.438 | 102 | 4.25 | 5.75 | 96.75 | – |
| 96 | 113.25 | 96.19 | 68 | 2.438 | 108.5 | 4.25 | 5.75 | 102.75 | 3275 |
AWWA Class D Ring type Slip-on & Blind Flanges
Dimensions in Inches
| Nom.size | Outside Ø (OD) | Slip-on Bore (ID) | No. of Bolt Holes | Ø of Holes | Ø Bolt Circle (BC) | Thickness (T) | Weight (lbs) | ||
| Slip-on | Blind | Slip-on | Blind | ||||||
| 2 | 6 | 2.44 | 4 | 0.75 | 4.75 | 0.625 | 0.625 | 3.9 | 4.7 |
| 2.5 | 7 | 2.94 | 4 | 0.75 | 5.5 | 0.625 | 0.625 | 5.3 | 6.5 |
| 3 | 7.5 | 3.57 | 4 | 0.75 | 6 | 0.625 | 0.625 | 5.7 | 7.5 |
| 4 | 9 | 4.57 | 8 | 0.75 | 7.5 | 0.625 | 0.625 | 7.7 | 10.6 |
| 5 | 10 | 5.66 | 8 | 0.875 | 8.5 | 0.625 | 0.65 | 8.8 | 13.6 |
| 6 | 11 | 6.72 | 8 | 0.875 | 9.5 | 0.688 | 0.693 | 10.7 | 17.7 |
| 8 | 13.5 | 8.72 | 8 | 0.875 | 11.75 | 0.688 | 0.812 | 15.3 | 31.8 |
| 10 | 16 | 10.88 | 12 | 1 | 14.25 | 0.688 | 0.953 | 19.2 | 51.7 |
| 12 | 19 | 12.88 | 12 | 1 | 17 | 0.812 | 1.117 | 33.1 | 86.7 |
| 14 | 21 | 14.19 | 12 | 1.125 | 18.75 | 0.938 | 1.133 | 46.9 | 107.4 |
| 16 | 23.5 | 16.19 | 16 | 1.125 | 21.25 | 1 | 1.265 | 60.1 | 149.8 |
| 18 | 25 | 18.19 | 16 | 1.25 | 22.75 | 1.062 | 1.331 | 63.6 | 177.7 |
| 20 | 27.5 | 20.19 | 20 | 1.25 | 25 | 1.125 | 1.448 | 79.4 | 233.6 |
| 22 | 29.5 | 22.19 | 20 | 1.375 | 27.25 | 1.188 | 1.568 | 89.9 | 290.5 |
| 24 | 32 | 24.19 | 20 | 1.375 | 29.5 | 1.25 | 1.661 | 113.4 | 364.5 |
| 26 | 34.25 | 26.25 | 24 | 1.375 | 31.75 | 1.312 | 1.786 | 128 | 448.2 |
| 28 | 36.5 | 28.25 | 28 | 1.375 | 34 | 1.312 | 1.906 | 140.5 | 542.6 |
| 30 | 38.75 | 30.25 | 28 | 1.375 | 36 | 1.375 | 2.008 | 163.3 | 647.3 |
| 32 | 41.75 | 32.25 | 28 | 1.625 | 38.5 | 1.5 | 2.15 | 210.1 | 798.6 |
| 34 | 43.75 | 34.25 | 32 | 1.625 | 40.5 | 1.5 | 2.252 | 219.1 | 916.9 |
| 36 | 46 | 36.25 | 32 | 1.625 | 42.75 | 1.625 | 2.37 | 259.4 | 1071.4 |
| 38 | 48.75 | 38.25 | 32 | 1.625 | 45.25 | 1.625 | 2.506 | 299.8 | 1278.2 |
| 40 | 50.75 | 40.25 | 36 | 1.625 | 47.25 | 1.625 | 2.609 | 311.1 | 1440.1 |
| 42 | 53 | 42.25 | 36 | 1.625 | 49.5 | 1.75 | 2.729 | 361.7 | 1648.1 |
| 44 | 55.25 | 44.25 | 40 | 1.625 | 51.75 | 1.75 | 2.849 | 385 | 1868.3 |
| 48 | 59.5 | 48.25 | 44 | 1.625 | 56 | 1.875 | 3.072 | 457.3 | 2340.7 |
| 54 | 66.25 | 54.25 | 44 | 1.875 | 62.75 | 2.125 | 3.435 | 610.6 | 3236.7 |
| 60 | 73 | 60.25 | 52 | 1.875 | 69.25 | 2.25 | 3.779 | 759.1 | 4327.6 |
| 66 | 80 | 66.25 | 52 | 1.875 | 76 | 2.5 | 4.136 | 1017 | 5722.2 |
| 72 | 86.5 | 72.25 | 60 | 1.875 | 82.5 | 2.625 | 4.48 | 1198.2 | 7249 |
| 78 | 93 | 78.25 | 64 | 2.125 | 89 | 2.75 | – | 1368.9 | – |
| 84 | 99.75 | 84.25 | 64 | 2.125 | 95.5 | 2.875 | – | 1639.7 | – |
| 90 | 106.5 | 90.25 | 68 | 2.438 | 102 | 3 | – | 1878.3 | – |
| 96 | 113.25 | 96.25 | 68 | 2.438 | 108.5 | 3.25 | – | 2298.3 | – |
| 102 | 120 | 102.25 | 72 | 2.688 | 114.5 | 3.25 | – | 2494.2 | – |
| 108 | 126.75 | 108.25 | 72 | 2.688 | 120.75 | 3.375 | – | 2892.5 | – |
| 120 | 140.25 | 120.25 | 76 | 2.938 | 132.75 | 3.5 | – | 3568.5 | – |
| 132 | 153.75 | 132.25 | 80 | 3.188 | 145.75 | 3.875 | – | 4628.6 | – |
| 144 | 167.25 | 144.25 | 84 | 3.438 | 158.25 | 4.125 | – | 5698.2 | – |
AWWA Class E Ring type Slip-on & Blind Flanges
Dimensions in Inches
| Nom.size | Outside Ø (OD) | Slip-on Bore (ID) | No. of Bolt Holes | Ø of Holes | Ø Bolt Circle (BC) | Thickness (T) | Weight (lbs) | ||
| Slip-on | Blind | Slip-on | Blind | ||||||
| 4 | 9 | 4.57 | 8 | 0.75 | 7.5 | 1.125 | 1.125 | 13.9 | 19.2 |
| 5 | 10 | 5.66 | 8 | 0.875 | 8.5 | 1.188 | 1.188 | 16.3 | 24.8 |
| 6 | 11 | 6.72 | 8 | 0.875 | 9.5 | 1.313 | 1.313 | 20.4 | 33.6 |
| 8 | 13.5 | 8.72 | 8 | 0.875 | 11.75 | 1.5 | 1.5 | 33.4 | 60.8 |
| 10 | 16 | 10.88 | 12 | 1 | 14.25 | 1.563 | 1.563 | 43.7 | 84.9 |
| 12 | 19 | 12.88 | 12 | 1 | 17 | 1.75 | 1.75 | 71.3 | 135.9 |
| 14 | 21 | 14.19 | 12 | 1.125 | 18.75 | 1.875 | 1.875 | 93.7 | 177.7 |
| 16 | 23.5 | 16.19 | 16 | 1.125 | 21.25 | 2 | 2 | 120.1 | 236.8 |
| 18 | 25 | 18.19 | 16 | 1.25 | 22.75 | 2.125 | 2.125 | 127.3 | 283.7 |
| 20 | 27.5 | 20.19 | 20 | 1.25 | 25 | 2.375 | 2.375 | 167.7 | 383.2 |
| 24 | 32 | 24.19 | 20 | 1.375 | 29.5 | 2.625 | 2.625 | 234.3 | 576.1 |
| 26 | 34.25 | * | 24 | 1.375 | 31.75 | 2.75 | 2.75 | * | 690.1 |
| 28 | 36.5 | * | 28 | 1.375 | 34 | 2.75 | 2.75 | * | 782.9 |
| 30 | 38.75 | * | 28 | 1.375 | 36 | 2.875 | 2.875 | * | 926.8 |
| 36 | 46 | * | 32 | 1.625 | 42.75 | 3.125 | 3.209 | * | 1450.7 |
| 38 | 48.75 | * | 32 | 1.625 | 45.25 | 3.125 | 3.394 | * | 1731.1 |
| 40 | 50.75 | * | 36 | 1.625 | 47.25 | 3.25 | 3.533 | * | 1950.2 |
| 42 | 53 | * | 36 | 1.625 | 49.5 | 3.375 | 3.695 | * | 2231.5 |
| 44 | 55.25 | * | 40 | 1.625 | 51.75 | 3.375 | 3.857 | * | 2529.4 |
| 48 | 59.5 | * | 44 | 1.625 | 56 | 3.5 | 4.159 | * | 3169 |
| 54 | 66.25 | * | 44 | 1.875 | 62.75 | 3.75 | 4.651 | * | 4382.5 |
| 60 | 73 | * | 52 | 1.875 | 69.25 | 3.875 | 5.116 | * | 5858.7 |
| 66 | 80 | * | 52 | 1.875 | 76 | 4.25 | 5.601 | * | 7749 |
| 72 | 86.5 | * | 60 | 1.875 | 82.5 | 4.375 | 6.066 | * | 9815.3 |
| 78 | 93 | * | 64 | 2.125 | 89 | 4.75 | * | ||
| 84 | 99.75 | * | 64 | 2.125 | 95.5 | 4.75 | * | ||
| 90 | 106.5 | * | 68 | 2.438 | 102 | 5.125 | * | ||
| 96 | 113.25 | * | 68 | 2.438 | 108.5 | 5.125 | * | ||
| 102 | 120 | * | 72 | 2.688 | 114.5 | 5.5 | * | ||
| 108 | 126.75 | * | 72 | 2.688 | 120.75 | 5.5 | * | ||
| 120 | 140.25 | * | 76 | 2.938 | 132.75 | 5.875 | * | ||
| 132 | 153.75 | * | 80 | 3.188 | 145.75 | 6.25 | * | ||
| 144 | 167.25 | * | 84 | 3.438 | 158.25 | 6.75 | * | ||
* The purchaser shall specify the ID of the flange for nominal pipe sizes 26 in. and larger. The diameter of the flange bore shall not exceed the pipe OD by more than .25 in.
AWWA Class F Ring type Slip-on & Blind Flanges
Dimensions in Inches
| Nom.size | Outside Ø (OD) | Slip-on Bore (ID) | No. of Bolt Holes | Ø of Holes | Ø Bolt Circle (BC) | Thickness (T) | Weight (lbs) | ||
| Slip-on | Blind | Slip-on | Blind | ||||||
| 4 | 10 | 4.57 | 8 | 0.875 | 7.88 | 1.13 | 1.13 | 18.3 | 23.6 |
| 5 | 11 | 5.66 | 8 | 0.875 | 9.25 | 1.21 | 1.21 | 22.3 | 30.9 |
| 6 | 12.5 | 6.73 | 12 | 0.875 | 10.63 | 1.31 | 1.31 | 29.7 | 42.9 |
| 8 | 15 | 8.73 | 12 | 1 | 13 | 1.31 | 1.31 | 39.9 | 62.1 |
| 10 | 17.5 | 10.88 | 16 | 1.125 | 15.25 | 1.5 | 1.5 | 56 | 95.5 |
| 12 | 20.5 | 12.88 | 16 | 1.25 | 17.75 | 1.63 | 1.63 | 83.2 | 143.4 |
| 14 | 23 | 14.19 | 20 | 1.25 | 20.25 | 1.94 | 1.94 | 127.9 | 214.9 |
| 16 | 25.5 | 16.19 | 20 | 1.375 | 22.5 | 2.14 | 2.14 | 166.8 | 291.7 |
| 18 | 28 | 18.19 | 24 | 1.375 | 24.75 | 2.25 | 2.25 | 204.2 | 369.8 |
| 20 | 30.5 | 20.19 | 24 | 1.375 | 27 | 2.33 | 2.33 | 247.4 | 458.8 |
| 22 | 33 | 22.19 | 24 | 1.375 | 29.25 | 2.5 | 2.5 | 306.7 | 580.6 |
| 24 | 36 | 24.19 | 24 | 1.625 | 32 | 2.69 | 2.69 | 387.6 | 737.9 |
| 26 | 38.25 | * | 28 | 1.875 | 34.5 | 3 | 3 | * | 911 |
| 28 | 40.75 | * | 28 | 1.875 | 37 | 3.13 | 3.13 | * | 1088 |
| 30 | 43 | * | 28 | 1.875 | 39.25 | 3.15 | 3.166 | * | 1233.3 |
| 32 | 45.25 | * | 28 | 1.875 | 41.5 | 3.25 | 3.332 | * | 1445.2 |
| 34 | 47.5 | * | 28 | 1.875 | 43.5 | 3.38 | 3.475 | * | 1668.6 |
| 36 | 50 | * | 32 | 2.125 | 46 | 3.46 | 3.671 | * | 1924.2 |
| 38 | 52.25 | * | 32 | 2.125 | 48 | 3.5 | 3.815 | * | 2195 |
| 40 | 54.25 | * | 36 | 2.125 | 50.25 | 3.63 | 3.982 | * | 2463.8 |
| 42 | 57 | * | 36 | 2.125 | 52.75 | 3.81 | 4.171 | * | 2864.7 |
| 44 | 59.25 | * | 36 | 2.125 | 55 | 4 | 4.338 | * | 3231.9 |
| 46 | 61.5 | * | 40 | 2.125 | 57.25 | 4.13 | 4.505 | * | 3610.6 |
| 48 | 65 | * | 40 | 2.125 | 60.75 | 4.5 | 4.781 | * | 4302.9 |
* The purchaser shall specify the ID of the flange for nominal pipe sizes 26 in. and larger. The diameter of the flange bore shall not exceed the pipe OD by more than .25 in.
