Airline Trolley is used for extended working where breathing air is continuously required for ongoing operations to provide breathing air in confined spaces, hazardous areas, or during fire fighting operations. For long durations, which can extended to unlimited hours because of its unique change over system. Its compact design helps in easy transportation and can supply air to single or multiple users. The complete structure is made of SS304 to accommodate one to four cylinders. The reducer is fitted with bleed valves at each connecting hose so that each cylinder can operate separately also. It comes with large castor wheels for easy movement with locking arrangement. It is provided with a manifold and a hose-reel of 30 mtr length and a face-piece with demand valve and night glow type pressure gauge.