clack valve
noun
a valve having a hinged flap permitting flow only in the direction in which the flap opens.
Words nearby clack valve
clabber, clabber cheese, clabby-doo, clachan, clack, clack valve, clacker, clackers, clackmannan, clackmannanshire, clacton
Origin of clack valve
First recorded in 1855–60
Also called flap valve.
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019