As they greedily sucked down the life-giving air, the metallic sound of the regulator valves was loud in the confined space.

A second tube will then run from the valve to a regulator valve that is attached to the gas cylinder.

The main valve on the cylinder is then opened, followed by the regulator valve.

At this point the needle valve is closed along with the regulator valve and cylinder vale.

The pilot turns the engine thrust control handle, and opens the regulator valve (3).

If the regulator valve is at fault, it is easy to prove.

Seconds later, red smoke began streaming from the regulator valve.

No," Worf answered, "not until we verify that both the regulator valve and the programming were tampered with.

Did you change, or in any way alter, the programming or the regulator valve on pod one?

The force of the initial slip caused the boiler to prime, carrying water over into the regulator valve and jamming it open.