butterfly valve

English Thesaurus

1. a valve in a carburetor that consists of a disc that turns and acts as a throttle (noun.artifact)

hypernym	:	valve,
definition	:	control consisting of a mechanical device for controlling the flow of a fluid (noun.artifact)

part meronym	:	carburetor, carburettor,
definition	:	mixes air with gasoline vapor prior to explosion (noun.artifact)