Search Result for "clapper valve":
Wordnet 3.0

NOUN (1)

1. a simple valve with a hinge on one side; allows fluid to flow in only one direction;
[syn: clack valve, clack, clapper valve]



WordNet (r) 3.0 (2006):

clapper valve
    n 1: a simple valve with a hinge on one side; allows fluid to
         flow in only one direction [syn: clack valve, clack,
         clapper valve]