Onyx Valve Company Duck Bill Check Valves


Onyx Duckbill check valves ensure the single directional flow of slurries, sewage, sludge and other hard to handle fluids.

There are no mechanical parts to wear or jam. Sleeves are available in a variety of elastomeric compounds allowing for compatibility with a wide range of media. In-line or exterior mounting options are available to suit all installation requirements.

  • Exterior mount or internal installation
  • Flanged or slip-on connection
  • Open and enclosed designs
  • NSF approved
  • 1″ to 60″




Additional resources

Onyx – Duck Bill Check Valves