- 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.
Origin of needle valve
First recorded in 1900–05
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for needle valve
One grain of sand clogged the needle-valve, Josh, and there's a thousand more grains to come down the supply-pipe.
Matt couldn't understand why the runabout wasn't beginning to develop trouble in the vicinity of the needle-valve.
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.Motor Matt's Daring, or, True to His Friends
Stanley R. Matthews
In this box a piston moves, which is provided at its lower end with a needle-valve.Gas-Engines and Producer-Gas Plants
R. E. Mathot
- a valve containing a tapered rod that can be moved in or out to control the flow of a fluid
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