Wafer Butterfly Check Valve

Selecting the wafer-style connection for our Dual Disc Check Valve offers significant advantages, primarily its extreme compactness and lightness. This design drastically reduces the valve's installation length and weight compared to flanged alternatives, making it ideal for tight spaces common in retrofit projects or dense piping arrangements. Installation is simplified as it fits between standard ANSI flanges using bolts passing through the pipe flanges. Despite its slim profile, it delivers full functionality: rapid spring-assisted disc closure prevents backflow and water hammer effectively. The wafer design is a practical solution combining performance with space and weight efficiency.

When fluid flows in the correct direction, its pressure pushes against the two hinged discs ("butterfly plates"). This pushing force overcomes the tension of the built-in springs, swinging the discs open against the valve walls. This allows fluid to pass freely. The instant the flow stops or tries to reverse, the springs immediately snap the discs back together. They swing shut rapidly, sealing tightly against the central seat to block any backward flow. No electricity or external control is needed.

In high-rise water systems, this valve prevents dangerous backflow and pressure drops. Installed in supply lines, it stops gravity-driven reverse flow when pumps shut off. In drainage stacks, it blocks sewage backflow during pressure surges. Its compact size fits tight pipe chases, while reliable spring closure ensures safety across dozens of floors without maintenance hassles.