Description
Product Description AWWA C207 Ring Flange
The AWWA C207 Ring Flange is a steel ring flange designed specifically for waterworks applications, adhering to the American Water Works Association (AWWA) standards. These flanges are commonly used in piping systems for water distribution, wastewater treatment plants, and other infrastructure requiring robust and reliable connections. Available in Class B, D, E, and F pressure ratings, accommodating a range of operating conditions.
AWWA C207 Ring Flange Dimension Class B, D, E, F
| Class | Nominal Pipe Size (inches) | Bolt Circle Diameter (inches) | No. of Holes (Bolts) | Bolt Hole Diameter (inches) |
| Class B | 4 | 8.0 | 4 | 0.75 |
| 6 | 9.0 | 4 | 0.75 | 0.75 |
| 8 | 10.5 | 8 | 0.75 | 0.88 |
| 10 | 12.0 | 8 | 0.75 | 0.94 |
| 12 | 13.5 | 8 | 0.75 | 1.00 |
| 14 | 15.0 | 8 | 0.75 | 1.00 |
| 16 | 16.5 | 8 | 0.75 | 1.00 |
| 18 | 18.0 | 8 | 0.75 | 1.12 |
| 20 | 19.0 | 8 | 0.75 | 1.12 |
| Class D | 24 | 22.5 | 12 | 0.75 |
| 30 | 27.0 | 12 | 0.75 | 1.25 |
| 36 | 31.5 | 12 | 0.75 | 1.38 |
| 42 | 36.0 | 12 | 0.75 | 1.50 |
| 48 | 40.5 | 12 | 0.75 | 1.62 |
| 54 | 45.0 | 16 | 0.75 | 1.62 |
| 60 | 49.5 | 16 | 0.75 | 1.75 |
| Class E | 66 | 54.0 | 16 | 0.75 |
| 72 | 58.5 | 16 | 0.75 | 2.00 |
| 78 | 63.0 | 16 | 0.75 | 2.12 |
| 84 | 67.5 | 16 | 0.75 | 2.25 |
| Class F | 90 | 72.0 | 20 | 1.00 |
| 96 | 76.5 | 20 | 1.00 | 2.50 |
| 102 | 81.0 | 20 | 1.00 | 2.62 |
| 108 | 85.5 | 20 | 1.00 | 2.75 |
AWWA C207 Ring Flange Weight Class B, D, E, F
| Class | Nominal Pipe Size (inches) | Weight (lbs) |
| Class B | 4 | 12 |
| 6 | 18 |
| 8 | 25 |
| 10 | 34 |
| 12 | 45 |
| 14 | 52 |
| 16 | 63 |
| 18 | 75 |
| 20 | 85 |
| Class D | 24 | 120 |
| 30 | 170 |
| 36 | 220 |
| 42 | 280 |
| 48 | 350 |
| 54 | 420 |
| 60 | 490 |
| Class E | 66 | 570 |
| 72 | 640 |
| 78 | 710 |
| 84 | 780 |
| Class F | 90 | 900 |
| 96 | 980 |
| 102 | 1,060 |
| 108 | 1,150 |
Tolerance
| Parameter | Tolerance |
| Nominal Diameter | ±1% of nominal diameter or ±1/16 inch, whichever is greater |
| Bolt Circle Diameter (BCD) | ±1/16 inch of the nominal bolt circle dimension |
| Bolt Hole Diameter | ±1/32 inch of the nominal bolt hole diameter |
| Number of Bolt Holes | ±1 bolt hole from the nominal number (if specified) |
| Outside Diameter (OD) | ±1/16 inch or ±1% of the nominal OD, whichever is greater |
| Thickness (T) | ±0.25 inch from the nominal thickness (varies by flange size and class) |
| Hub Height (H) | ±0.125 inch from the nominal hub height |
| Face Flatness | ≤1/32 inch deviation from flatness |
| Surface Finish | Surface must be free from cracks, pits, or other visible defects |
| Inside Diameter (ID) | ±1/16 inch or ±1% of the nominal ID, whichever is greater |
| Hub Radius | ±0.125 inch from the nominal radius |
| Marking Tolerance | Legible, permanent markings in accordance with AWWA standards |
Applications:
- Municipal Water Systems: Used for joining pipes, valves, and fittings in potable water and sewage systems.
- Irrigation Systems: Ensures secure and leak-free connections in agricultural and landscaping irrigation networks.
- Industrial Plants: Ideal for water-handling systems in power plants, refineries, and other industrial facilities.
Benefits:
- Durability: Resistant to wear and tear, ensuring long-lasting performance.
- Versatility: Suitable for both potable and non-potable water systems.
- Cost-Effective: A lightweight and economical alternative to other flange types.
- Easy Installation: Facilitates efficient assembly and maintenance in field operations.
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