Rapid inflation device for tubeless tire

A rapid inflation device having a supply source of pressurized fluid, comprising at least one nozzle holder assembly that can be manually moved and located by an operator between a rest position and a working position, at least one blowing-in nozzle, at least one flexible conduit arranged to put said supply source of pressurized fluid in communication with the respective nozzle holder assembly, at least one manual control means arranged at each said nozzle holder assembly and designed to activate and deactivate the pressurized fluid feeding on operator's control, a safety sensor means at the each said nozzle holder assembly designed to detect whether the nozzle holder assembly is in working position, and a slave valve means adapted to control pressurised fluid feeding from said supply source to said at least one blowing-in nozzle upon control of said safety sensor means and said at least one manual control means.