throttle valve

noun

a valve for throttling the working fluid of an engine, refrigerator, etc.

Origin

1805-15

Examples from the web for throttle valve

The throttle control failure caused the astern throttle valve to fully open, resulting in increased steam flow.
Both the needle valve and the throttle valve are used to adjust the gas pressure in the source.
Speed or power is then changed by signals to the throttle valve through a governor or actuator.
Repeated throttle valve adjustments have not been successful in stopping the valve closures.
For example, verifying the position of a throttle valve or other control may require observation of the positioning activity.
The hydrostatic test shall be applied from the boiler drum to the throttle valve.
The trip mechanism is usually a latch hook device on the trip-and-throttle valve.