He invented the double-beat steam valve in around 1800.

The cooling jacket is similar to the Maxim gun but comes with a steam valve.

When the speed of the engine falls too far, the balls will fall by gravity and open the steam valve.

Slowly, the steam valves closed and the propeller engaged, beating the air in wide, smooth strokes.

He said that by 10:40, Con Edison crews had shut off the steam valves in the area.

Above him, the steam valve began to whistle faintly, purging excess air from the system.

And it was there, in an interview, that she opened the steam valve to what is a notorious temper.

I am told that several of the steam valves needed to be replaced.

Tell me, if that plant worker hadn't turned off the steam valve, wouldn't that have done it?

Without bursting a few steam valves, we could get two or three knots more out of this tub.