Sirai® began producing heating and air conditioning units in Milan, Italy in 1947. It has been producing solenoid valves since the 1950s when the increase of industrial automation resulted in the increase of demand for solenoid valves. Solenoid valves are used to control non-aggressive liquid and gaseous fluids controlled through an electric current. The company started producing off-the-shelf micro valves that became the current ‘Y’ series. It established an associated company producing solenoids and coils used in the production of the solenoid valves. Sirai was certified ISO 9001 compliant in 1991.

In 1998 Sirai became part of US Emerson Electric Co Group and has introduced new products and customised solutions. Further mergers in 2009 with Asco Numatics and Sotrac to establish a new company called Asco Numatics Sirai.

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