Originally known as the Norwalk Iron Works, the Norwalk Compressor Company, Incorporated had been located in South Norwalk, Connecticut since 1864. In 2005, Norwalk relocated its operations to Stratford, CT, and modified its name to Norwalk Compressor Company. Since its first patent in January 1876, Norwalk Compressor Company has designed, manufactured, and serviced its own positive displacement reciprocating gas compressors. Norwalk Compressor 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. With the assistance of global Manufacturer's Agent and Representative networks, Norwalk Compressor Company offers approximately 100 quality products, designed and built for some of the world's most discerning clients. Typical markets served are Alternate Fuels, Chemical Process, Manufacturing, Pharmaceutical, Science/Research, Nuclear, Specialty gases, Aerospace, Offshore, Petrochemical, petroleum, and Power Cogeneration While standard model compressors are available, Norwalk Compressor Company specializes in the conservative design of custom engineered applications. Our current frame limitation is a nominal 800 HP (600 kW); and the maximum pressures we have compressed to are 25,000 PSIG (1,755 kg/cm¾-ga) for lubricated service and 5,000 PSIG (350 kg/cm¾-ga) for non-lubricated service