Spares parts and components of PSA gas plants, components of PSA gas generator, desiccants and catalysts like as CMS (carbon molecular sieves), activated carbon, activated alumina, molecular sieve, palladium catalyst, nickel catalyst, and copper catalyst, GSR valves, quick exhaust valve, DOM valve, non return valves, safety valves, auto drain valves and ammonia valves, heater, diaphragm, oxygen analyzer, temperature controller, housing and filter elements.