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'Sarco' of Fenchurch Street, London.
1888 The Company was founded in London to import thermostatic steam traps from Germany which were branded Sarco.
1907 Converted to Limited company
1908 established an office in New York, began trading as the Sarco Fuel Saving and Engineering Company.
WWI manufacture of steam traps began under licence in USA
1919 Exhibited a CO2 recorder for monitoring boiler performance
1932 a new business was established in London to manufacture Sarco steam traps but under a different brand name: Spirax (derived from the helical spiral tubing which formed an integral part of the steam traps).
1935 Sarco set up its own factory in Pennsylvania, and the company became known as the Sarco Manufacturing Corporation. Sarco-branded steam traps and apparatus were exported to the Europe; Sanders, Rehders & Co. had become a selling agent for Sarco products and changed its name to Sarco Thermostats
1937 Spirax Manufacturing Co acquired Sarco Thermostats, and moved to Cheltenham.
1920s: see Sarco-Reliance.