COUPLING HEAD ASSEMBLY FOR A PRESSURISED AIR OUTLET OF A RAILWAY VEHICLE AND AN ACOUSTIC MUFFLER DEVICE

An assembly of a coupling head (9) of a pressurized air outlet of a rail vehicle and an acoustic attenuation device (1), the acoustic attenuation device (1) comprising a connection member (2), mounted in said coupling head (9), and an acoustic attenuation member (3), said members (2, 3) being independent and assembled in a removable manner.