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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

physical entity go
an entity that has physical existence

object, physical object go
a tangible and visible entity

whole, unit go
an assemblage of parts that is regarded as a single entity

artifact, artefact go
a man-made object taken as a whole

instrumentation, instrumentality go
an artifact (or system of artifacts) that is instrumental in accomplishing some end

device go
an instrumentality invented for a particular purpose

mechanism go
device consisting of a piece of machinery

control, controller go
a mechanism that controls the operation of a machine

valve
control consisting of a mechanical device for controlling the flow of a fluid

noun.artifact

10 Subcategories

accelerator, throttle, throttle valve go
a valve that regulates the supply of fuel to the engine
ball valve go
any valve that checks flow by the seating of a ball
butterfly valve go
a valve in a carburetor that consists of a disc that turns and acts as a throttle
choke go
a valve that controls the flow of air into the carburetor of a gasoline engine
clack valve, clack, clapper valve go
a simple valve with a hinge on one side
exhaust valve go
a valve through which burned gases from a cylinder escape into the exhaust manifold
intake valve go
a valve that controls the flow of fluid through an intake
poppet, poppet valve go
a mushroom-shaped valve that rises perpendicularly from its seat
escape, safety valve, relief valve, escape valve, escape cock go
a valve in a container in which pressure can build up (as a steam boiler)
slide valve go
valve that opens and closes a passageway by sliding over a port