Valeport was founded near Dartmouth, in Devon in 1969 by Jim Stevens and originally sold the Braystoke Flow Meter, an impeller-type device which was used in the feasibility study for the Thames Barrier .
Valeport has greatly expanded since its founding in 1969: having outgrown its original site in Dartmouth, in 2003 the company moved to its current location on the banks of the River Dart at Totnes.