Spirax-Sarco Engineering (LSE: SPX) is a leading British-based manufacturer of boiler and pipeline control valves for steam heating and process plants.
It is headquartered in Cheltenham and is a constituent of the FTSE 250 Index.
The Company was founded in 1888 as Sanders, Rehders & Co. ('Sarco') in London importing thermostatic steam traps from Germany.
In 1932 it started to manufacture steam traps in United Kingdom under the Spirax brand name.
It was first listed on the London Stock Exchange in 1959.