Improvements in the construction of vacuum valves compressed air for pneumatic brake devices of railway vehicles. (Machine-translation by Google Translate, not legally binding)

摘要

Improvements in the construction of vacuum-compressed air valves for pneumatic brake devices of railway vehicles, of the types of valves that are governed by pressure in a regulated vacuum brake line, by means of an inlet and outlet valve operated by a piston, the pressure in a main air pipe belonging to the pneumatic brake, characterized in that the actuating piston for the inlet and outlet valve is loaded, in the direction of opening of the outlet valve, by the pressure in the air line main and, in the opposite direction, to open the inlet valve by a pre-control pressure which, by means of valve devices, with the brakes released, is regulated independently of the level of the vacuum in the vacuum brake line to a pressure level determined and during braking caused by air intake to the vacuum brake line, it is lowered proportionally to the increase in pressure in the vacuum brake line. (Machine-translation by Google Translate, not legally binding)