- a valve for throttling the working fluid of an engine, refrigerator, etc.
Origin of throttle valve
First recorded in 1805–15
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for throttle valve
The engineer may draw his throttle-valve and give the piston full head.The Seat of Empire
Charles Carleton Coffin
In about an hour the engine can be started by a turn of the throttle-valve.Boys' Second Book of Inventions
Ray Stannard Baker
The throttle-valve is at the entrance to the steam-pipe in the steam-dome.
The devices for controlling the steam are the throttle-valve and the valve-gear.
No helm, or ballast, or throttle-valve could avail them now.All Around the Moon