In this design, the suction of the pump motor lifts the diaphragm to create a vacuum within the collection system to extract milk.

Bacteria and viral filters may be present to prevent any contamination or overflow into pump motor.

Hydrazine, for the bomb bay vacuum pumps; the pump motors could be wired to the props, probably.

Typically, due to the high current draw when starting the pump motor, hydraulic elevators are not run using standard emergency power systems.

If the pump motor makes a humming sound, indicating that it is working but does not lower the water in the sump, suspect an air lock.

The slow huffing of the pump motor diminished behind him.

Down here under the ridge, he could no longer hear the distant pump motor.

Next to the pump motor, Chavez took the wrench and removed the existing canister.

Noonan reopened the valve and turned the pump motor back on.

The pump motors are silent so don't count on hearing them.