clack valve


a valve having a hinged flap permitting flow only in the direction in which the flap opens.

Nearby words

  1. clabber,
  2. clabber cheese,
  3. clabby-doo,
  4. clachan,
  5. clack,
  6. clacker,
  7. clackers,
  8. clackmannan,
  9. clackmannanshire,
  10. clacton

Origin of clack valve

First recorded in 1855–60

Also called flap valve. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019