clapper valve

Definitions of clapper valve
1

n a simple valve with a hinge on one side; allows fluid to flow in only one direction

Synonyms:
clack, clack valve
Type of:
valve
control consisting of a mechanical device for controlling the flow of a fluid

Sign up, it's free!

Whether you're a student, an educator, or a lifelong learner, Vocabulary.com can put you on the path to systematic vocabulary improvement.