Installation for filling a sand box fitted to a rail vehicle

The present invention relates to an operator delivering a granular material such as sand from a fixed station to fill tanks commonly referred to as "sand boxes" which are provided on rail vehicles, where the term "rail vehicle" covers not only trains but also trams. An installation for filling a rail vehicle sand box comprises both a pressurized vessel containing sand or other granular material and a portable delivery head connected to the vessel. The installation further comprises an intermediate assembly having a first end fitted with means for airtight coupling to the portable delivery head and a second end connected to the sand box. The intermediate assembly can form part of the equipment of a rail vehicle, or alternatively it can form part of the equipment of a platform.