Norwalk Compressor Company has designed, manufactured, and serviced its own positive displacement reciprocating gas compressors. Our company has also made many significant contributions to the advancement of compressor technology, such as a patent for the world's first multi-stage compressor in July 1881. Our application capabilities and expertise have been unquestioned in compressing high pressure air and chemically active or inert gases such as Acetylene, Ammonia, Chlorine, Carbon Dioxide, Helium (including radioactive Helium), Hydrogen, Natural Gas, Nitrogen, Nitrous Oxide, Oxygen, and Sulfur Hexafluoride.