AWWA C207 Flanges
AWWA C207 Flanges
AWWA C207 Flanges are designed in compliance with the standards set by the American Water Works Association (AWWA). These flanges are primarily used in waterworks, wastewater, and other low-pressure industrial applications. AWWA C207 covers steel ring flanges and blind flanges for use in pipelines, flanged fittings, and other flanged connections.
Type of AWWA C207 Flanges
AWWA C207 Ring Flange
Flat, circular flanges with a center bore used to connect pipes and fittings.
AWWA C207 Blind Flange
Solid flanges used to seal the end of a pipe or close off a piping system.
AWWA C207 Flange Class B, D, E, F Dimensions
| 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 Flange Class B, D, E, F Weight Chart
| 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 |
Material
1. Carbon Steel
- Grades Used: ASTM A36, A283, or equivalent.
- Properties:
- Excellent weldability and machinability.
- High strength-to-weight ratio.
- Cost-effective for large-scale water systems.
- Applications: Suitable for waterworks, wastewater treatment, and general low-pressure industrial applications.
2. Stainless Steel (Optional)
- Grades Used: ASTM A182 F304, F316, or equivalent (if corrosion resistance is required).
- Properties:
- Superior corrosion resistance.
- Durable in harsh environments, such as wastewater or coastal installations.
- Applications: Rarely used unless high corrosion resistance is necessary.
3. Coatings and Linings
- Purpose: To enhance durability and resistance to environmental conditions.
- Common Coatings:
- Fusion-bonded epoxy (FBE).
- Galvanization.
- Paint or bituminous coatings.
- Applications: Protects against corrosion in water, sewage, or other aggressive environments.
4. Optional Material Enhancements
- Ductile Iron or Alloy Steel: Sometimes used for specialized applications requiring higher strength or ductility.
- Custom Materials: Available upon request for specific project requirements.
Applications
- Waterworks Pipelines:
- Wastewater Systems
- Irrigation Projects
- Industrial Piping
- Hydraulic Applications
- Maintenance Access
Benefits
- Cost-effective for large-diameter piping systems.
- Durable and corrosion-resistant when coated or used with compatible materials.
- Customizable for various bolt patterns and face types.
