The Nash Engineering Company was founded in 1905 in Norwalk, Connecticut as a manufacturer of liquid ring vacuum pumps.
During the early years, NASH developed vacuum stream heating systems and vacuum sewage collection systems for many of the growing USA cities.
NASH also developed vacuum pumps[1][2] which were applied in the manufacture of pulp and paper and in the sugar industry.
[3][4][5] During the mid-20th century, NASH continued expanding into industrial markets such as paper, power, petrochemical, general industrial and food markets.
[6] In the early 1960s Nash discontinued sales for commercial markets – vacuum steam heating and sewage collection – to concentrate on the industrial markets.