throttle valve
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noun
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. 2019
Examples from the Web for throttle valve
Historical Examples of throttle valve
The engineer may draw his throttle-valve and give the piston full head.
The Seat of EmpireCharles Carleton Coffin
In about an hour the engine can be started by a turn of the throttle-valve.
Boys' Second Book of InventionsRay Stannard Baker
The throttle-valve is at the entrance to the steam-pipe in the steam-dome.
The Story of Great InventionsElmer Ellsworth Burns
The devices for controlling the steam are the throttle-valve and the valve-gear.
The Story of Great InventionsElmer Ellsworth Burns
No helm, or ballast, or throttle-valve could avail them now.
All Around the MoonJules Verne