blast gate

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blast gate

[′blast ‚gāt]
(metallurgy)
A sliding plate in a cupola blast pipe to channel airflow in the proper proportion.
References in periodicals archive ?
The airflow was exhausted by an axial fan; its rate was adjusted with a speed controller or blastgate based on thermal anemometer measurements.
Both the air input plenum and the hoods are connected to blowers and have blastgate dampers for airflow control.
Both the air input plenum and the exhaust hoods are connected to blowers, and both have blastgate dampers for airflow control.