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

See Examples For:

needle valve

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 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

The fuel from the tank entered the top of the float compartment and the opening was closed by a needle valve carried on top of a hollow metal float.

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

Open or close the needle valve to secure a flame about 4 inches long.

From Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon by Manly, Harold P. (Harold Phillips)

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

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