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Spirax Manufacturing Co Ltd. of Cheltenham, Gloucestershire.
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).
1940s Spirax was granted rights to trade Sarco products in the United Kingdom (excepting Canada), Ireland, Denmark, Holland, Portugal, Sweden, and Norway, while the U.S.-based Sarco retained the rest of the world's markets.
1951 Private company.
1952 Spirax purchased sole rights to Sarco products in the U.K.
1953 Company became Spirax-Sarco.