AWWA C507 is the standard for ball valves from 6 inches to 60 inches (150 mm to 1,500 mm) developed by the American Water Supply Engineering Association (AWWA). It is specifically designed for the shut-off and connection of media in large-diameter water supply systems and features high sealing performance, corrosion resistance and long service life.
AWWA C507 Full Port Ball Valves Specifications & Design Parameters
| Parameter / Feature | Technical Description / Specification |
| Standard Code | AWWA C507 |
| Valve Type | Shaft-Mounted / Trunnion Ball Valve |
| Size Range (NPS) | 6" – 60" (150 mm – 1,500 mm) |
| Pressure Class | 150, 250, 300 psi |
| Port Configuration | Full Port (Full Bore); extremely high
CvCv values |
| Sealing Type | Resilient Seated (Rubber) or Metal-to-Metal Seated |
| End Connections | Flanged, compliant with AWWA C207 or ASME B16.1 |
| Operation / Actuation | Handwheel, Gearbox, Electric, Hydraulic, or Pneumatic |
AWWA C507 Ball Valves Material Specifications
| Component Name | Common Materials (ASTM Standards) | Description / Remarks |
| Body | Ductile Iron A536 / Cast Steel A216 | High-pressure service requires Ductile Iron or Cast Steel. |
| Ball | Ductile Iron / Stainless Steel / Chrome-Plated Carbon Steel | Precision-finished surface to ensure long seat life. |
| Shaft | SS 304/316 / 17-4PH | Must be designed as Anti-blowout type. |
| Seat | EPDM / Buna-N / Stainless Steel | Resilient seats achieve bubble-tight shutoff; Metal seats for scouring resistance. |
| Bearings | Self-lubricating Bronze / Composite Liners | Supports ball weight and reduces operating torque. |
| Internal Coating | Fusion Bonded Epoxy (FBE) | Compliant with AWWA C550; suitable for potable water. |
AWWA C507 Ball Valves Pressure Ratings & Hydrostatic Test Table
| Pressure Class | Max Working Pressure (psi) | Shell Test Pressure (2x) | Seat Test Pressure (1x) |
| Class 150 | 150 psi (1.03 MPa) | 300 psi (2.07 MPa) | 150 psi (1.03 MPa) |
| Class 250 | 250 psi (1.72 MPa) | 500 psi (3.45 MPa) | 250 psi (1.72 MPa) |
| Class 300 | 300 psi (2.07 MPa) | 600 psi (4.14 MPa) | 300 psi (2.07 MPa) |
AWWA C507 Valves Face-to-Face Dimensions
| Nominal Size (in) | Nominal Size (mm) | Typical F-to-F Length (in/mm) | Estimated Weight (kg) |
| 8" | 200 | 11.5 / 292 | 150 |
| 12" | 300 | 14.0 / 356 | 320 |
| 24" | 600 | 24.0 / 610 | 1,850 |
| 36" | 900 | 36.0 / 914 | 4,200 |
| 48" | 1200 | 48.0 / 1219 | 8,500 |
Why Choose AWWA C507 Ball Valves for These Applications?
| Feature | Technical Advantage | Application Benefit |
| Ultra-Low Flow Resistance | Extremely high flow coefficient (
CvCv ); performance is equivalent to a straight section of pipe. |
Energy Efficiency: Reduces pumping energy consumption, potentially saving tens of thousands in annual electricity costs. |
| High Velocity Resistance | Uniform load distribution on the ball with robust trunnion/shaft support. | Safety & Stability: Remains stable under high-velocity scouring where butterfly valves might suffer from vibration or cavitation. |
| Bi-directional Sealing | Resilient or metal seats provide 100% bi-directional shutoff. | Leak Prevention: Ensures complete isolation between different pressure zones in complex piping networks. |
| Self-Cleaning Capability | The rotation of the ball wipes away debris and deposits from the seating surfaces. | Long Service Life: Highly suitable for raw water or produced water containing silt, sand, or minerals. |
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FAQ
What is the difference between ASME and AWWA?
AWWA: focuses on pipe and valve interfaces common to municipal water-dimensions and jointing assume ductile iron and waterworks fittings. ANSI/ASME: defines broader mechanical dimensions, bolt patterns and pressure class definitions for industrial piping.
What does AWWA stand for?
The American Water Works Association (AWWA) is the largest organization of water supply professionals in the world. AWWA believes that every water professional deserves to feel empowered and have the tools and resources necessary to provide their communities with safe and clean water.