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needle valve

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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.
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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

Historical Examples

  • One grain of sand clogged the needle-valve, Josh, and there's a thousand more grains to come down the supply-pipe.

    Motor Matt's Red Flyer, or, On the High Gear

    Stanley R. Matthews

  • 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.

  • In this box a piston moves, which is provided at its lower end with a needle-valve.

British Dictionary definitions for needle valve

needle valve

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