Oxygen filling stations used for filling cylinders of any size up to 152 bar. It is a complete set up from Compressor, Air receiver, Dryer, Oxygen Generator, Gas Booster, Filtration unit, Monitoring systems, and Cylinder. The filling station can be operated 24 hours per day 7 days a week and operated automatically or manually depending on customer needs. The high-pressure compressor or the gas booster starts & stops based on customer-specific parameters. The operation is supervised by the control system and when any deviation from specified operation parameters occurs, the system is automatically shut down.