needle valve

noun

, Machinery.

1. a valve with a needlelike part, a fine adjustment, or a small opening, especially a valve in which the opening is controlled by a needlelike or conical point that fits into a conical seat.

needle valve

noun

1. a valve containing a tapered rod that can be moved in or out to control the flow of a fluid

Word History and Origins

Origin of needle valve¹

First recorded in 1900–05

Example Sentences

He inspected the needle valve with much care, and had Foster on the front seat trying to start her afterwards.

From Project Gutenberg

Matt flung down the can, adjusted the needle-valve of the gasoline shut-off which he had found out of order, and tried the motor.

From Project Gutenberg

When the level of gasoline in the float chamber was lowered the float would fall and the needle valve uncover the opening.

From Project Gutenberg

It will be noticed that a metering pin or needle valve opens the jet when the air valve opens.

From Project Gutenberg

When this adjustment is secured the lock nut is screwed in place so the needle valve will keep the adjustment.

From Project Gutenberg