Maybe the Lizards didn't use valves, though he had no idea what might take their place.

It is also a valve used in air brake systems on heavy trucks.

The nostrils are located on top of the head and can be closed using valves.

In due course amplifiers for music and later television were also built using valves.

So water slice 1 is let into a basin with bottom at level 2, using gravity and valves.

The basic circuits used electronic valves, and the heat generated was itself a great problem.

Because of this a single sleeve valve can replace several standard valves used in series.

This engine used larger valves and carburetors than previous years.

In the early 19th century these two instrument makers almost simultaneously invented the valves still used today.

The agency has advised doctors whose patients await surgery to consider using valves from other companies.