Meaning of triple valve | Babel Free

Definitions

In railway air braking systems, a valve that performs three functions.

Examples

“By 1873, the triple valve had been developed satisfactorily in a form⟳ which it retained for many years, and by it the automatic character of the brake was ensured. The valve got its name⟳ from its triple function of applying the brakes, releasing them, and re-charging the auxiliary reservoirs.”

“The basic equipment on each vehicle consists of the auxiliary reservoir, the triple valve and the brake cylinders. When the train⟳ pipe pressure is reduced, the triple valve spills air out of the auxiliary reservoir until its pressure becomes equal to that of the train⟳ pipe; this air is passed into the brake cylinders.”

CEFR level