Having been in operation there for two months, she had developed a leak in a steam valve which supplied steam to a stand-by electrical generator.

Opening or damaging a steam valve or pipe can be potentially deadly.

He developed different types of engines, like a three-way steam valve engine, which could transition the elevator between up to down and stop it rapidly.

For starting, a hand controlled high pressure steam valve was provided by means of which the driver could admit a proportion of high pressure steam into the low pressure cylinders.