needle valve

American  

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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needle valve British  

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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Etymology

Origin of needle valve

First recorded in 1900–05

Example Sentences

For a while they spoke of the difficulties Gay must be having getting a needle valve and then gradually as the time passed they didn’t mention him any more.

From "Cannery Row" by John Steinbeck

There is a needle valve, and the point must be on the needle and must sit in its hole or the carburetor does not work.

From "Cannery Row" by John Steinbeck

For this reason it is necessary to use a needle valve, similar to that in an ordinary garden hose nozzle; and by such a valve the amount of water may be regulated to a nicety.

From Electricity for the farm Light, heat and power by inexpensive methods from the water wheel or farm engine by Anderson, Frederick Irving

The float may bind on its guide, the needle valve regulating the gasoline-inlet opening in bowl may stick to its seat.

From Aviation Engines Design?Construction?Operation and Repair by Pag?, Victor Wilfred

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

From Aviation Engines Design?Construction?Operation and Repair by Pag?, Victor Wilfred