AWWA C508 is the authoritative performance and design standard for swing check valves in the American water engineering field. It is specifically designed for water supply and wastewater treatment systems, ensuring that the valve has high reliability, durability and safety in preventing backflow of media.
Looking for AWWA C508 Specifications? Download Our 2" to 24" Data Sheets Now.
AWWA C508 General Specifications
| Parameters | Technical Details | Remarks |
| Standard Specification | AWWA C515 (Standard for Swing Check Valves) | Compliance with waterworks service standards. |
| Size Range | 2" - 24" (DN50 - DN600) | Larger sizes (up to 72") available upon request. |
| Rated Working Pressure | 150 psi, 200 psi, 250 psi | Depending on size and material (Cast Iron or Ductile Iron). |
| End Connections | Flanged (ASME B16.1), MJ, Grooved | Flanged ends are the industry standard. |
| Face-to-Face Dimension | Per ASME B16.10 / AWWA C508 | Ensures interchangeability with other standard valves. |
| Hydrostatic Test Pressure | Shell: 2 x WP / Seat: 1 x WP | Rigorous testing for structural and seal integrity. |
| Waterway Design | Full Waterway (Clear Port) | Minimizes head loss and allows passage of spherical solids. |
| Service Media | Potable Water, Raw Water, Sewage | Suitable for municipal and industrial water systems. |
AWWA C508 Materials of Construction
| Component / Part Name | Typical Materials | Material Specification / ASTM Standard |
| Body / Bonnet | Ductile Iron / Gray Iron | ASTM A536 / ASTM A126 Cl. B |
| Disc (Wedge) | Ductile Iron (Rubber Encapsulated) | ASTM A536 + EPDM/NBR |
| Body Seat Ring | Bronze / Stainless Steel | ASTM B62 / ASTM A276 Type 304 |
| Hinge / Arm | Ductile Iron / Stainless Steel | Robust design to withstand high impact loads. |
| Hinge Pin | Stainless Steel 304 / 316 | Ensures smooth rotation and prevents corrosion-seizing. |
| Bushings | Brass / Bronze / PTFE | Self-lubricating materials for long-term reliability. |
| Protective Coating | Fusion Bonded Epoxy (FBE) | Compliant with AWWA C550 for corrosion protection. |
| Bolting / Fasteners | Zinc-Plated Steel / Stainless Steel | ASTM A307 / A193 B8 |
Applications of AWWA C508 Valve
Municipal Water Supply
Pump Station Protection
Distribution Networks
Storage Tanks & Reservoirs
Wastewater & Sewage Service
Raw Sewage
Lift Stations
Treatment Plant Processes
Water Hammer Mitigation
With Lever & Weight
With Lever & Spring
With Cushioning Device
Industrial Water Treatment
Power Plants
Pulp & Paper / Mining
Commercial Building Systems
GNEE Check valve factory
Reliable Backflow Prevention – Get a Rapid Quote for AWWA C508 Swing Check Valves Today.
FAQ
What is the problem with swing check valves?
Typical swing check valve issues include disc chattering, slamming, tapping against the seat, cavitation, water hammer, wear, erosion etc.
What is the life expectancy of a swing check valve?
Typical Lifespan
On average, check valves can last anywhere from 5 to 20 years. However, this lifespan can be extended or reduced based on the factors mentioned earlier. For instance, check valves made from high-quality materials and operated under ideal conditions may last beyond 20 years.
Do swing check valves need to be installed horizontally?
Orientation a. Swing check valves are always installed with the HINGE PIN placed horizontally, and above the pipe centerline (as shown in the pictures at the end of this section). Incorrect installation may result in binding, high head loss, and/or sticking in the open position.