equipment producing low air pressure
The Roots blower is one example of a vacuum pump
A vacuum pump is a type of pump device that draws gas particles from a sealed volume in order to leave behind a partial vacuum. The first vacuum pump was invented in 1650 by Otto von Guericke, and was preceded by the suction pump, which dates to antiquity.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).