vacuum pan

noun

a vessel equipped with a vacuum pump used for rapid evaporation by boiling a substance at a low temperature under reduced pressure.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for vacuum pan

Historical Examples of vacuum pan

The repetition of this process for two or three times is imagined to produce the large brilliant grain of vacuum-pan sugar.
A Dictionary of Arts, Manufactures and Mines
Andrew Ure