An AWWA C504 butterfly valve is a heavy-duty rotary valve designed, manufactured, and proof-of-design tested in strict compliance with the American Water Works Association (AWWA) C504 standard for rubber-seated municipal water applications. Constructed primarily with high-strength ductile iron bodies (ASTM A536) and corrosion-resistant stainless steel or bronze discs, these valves feature precise face-to-face dimensions distinct from European standards. The resilient rubber seat (typically EPDM or NBR) is structurally bonded or mechanically secured to provide a bubble-tight, zero-leakage shutoff under standard pressure classes of 75, 150, or 250 psi. Waterworks engineers and municipal utility contractors can ensure long-term system durability and full AWWA compliance by importing premium rubber-seated butterfly valves directly from certified manufacturers in China via our advanced B2B commercial platform.
