Embodiments of the present disclosure provide a pressure braking device, a braking system, and a railway vehicle, relating to the field of braking. The pressure braking device comprises a three-pressure braking mechanism and a pressure reducing mechanism, ...

A pneumatic booster (40) disposed between a brake pedal (5) and a master cylinder (7) includes a cylindrical member (60) provided on an outer circumferential side of an output rod (58). A seal member (62) seals between an outer circumferential side of the ...