It hadn't taken long in the low pressure air which surrounded them.

They generally use low pressure air, almost always below 3 psi.

High pressure air was precious: there was not much of it.

High pressure air roared and the green light beside the hatch flashed clear.

A chamber in the housing is filled with high pressure air.

For fuels such as gas oil and diesel, the lines can be blown out with high pressure air.

It discharges by using high pressure air to move air out of the way.

The batteries were nearly empty and the high pressure air exhausted.

The red indicates the flow of high pressure air.

The yellow shows where the low pressure air is used in the bolt assembly.