air pump
vacuum pump

Allow the vacuum pump to run an additional three minutes.

I listened to the sucking noises of the vacuum pumps.

To make water sublime around here, you would need a running vacuum pump to keep the pressure low.

"Bring a vacuum pump here and hook it up fast!"

When pills don't work or can't be taken due to other medical conditions, one option is a vacuum pump.

Problems with the vacuum pumps continued to afflict the project.

He next attached a Leyboold vacuum pump to the case.

He also acquired the best vacuum pumps available at the time.

The board's test results from the vacuum pump came back and all the samples indicated safe lead levels.