a clack valve having two flaps with a common hinge.
a valve, as the throttle valve in a carburetor, that swings about a central axis across its face.
How Hip Is Your Lingo? Take Our Slang Quiz!
If you aren’t already skilled in slang, then this quiz can get you up to speed in no time!
Question 1 of 11
OK Boomer can be perceived as pejorative, but it is mostly considered to be _____
Origin of butterfly valve
First recorded in 1860–65
Words nearby butterfly valve
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for butterfly valve
a disc that acts as a valve by turning about a diameter, esp one used as the throttle valve in a carburettor
a non-return valve consisting of two semicircular plates hinged about a common central spindle
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012