History

Diaphragm valves were first used in ancient Greek and Roman times to control the temperature and flow of water into the hot baths. The diaphragm consisted of crude leather closing over a weir like design and was manually operated.

The modern diaphragm valve was invented in the early 1900s by a South African mining engineer, P. K. Saunders, who was tasked with coming up with a solution for valves used to supply air and water to underground mines. Traditional valves had a tendency for failure around leaky seats and stuffing boxes. As a student of history and archeology, Saunders came across the Greco-Roman designs for diaphragm valves that were utilized for hot baths. Drawing inspiration from these valves, he came up with the design for the modern diaphragm valve. Patents for the same were filed in 1931 and the Hills McCanna Company became the first licensee to manufacture these valves. Shortly thereafter Grinell, Dow Chemical and Arco-Wynn also entered the market with their own diaphragm valves.

In 1958, Daleng Corporation licensed the Arco-Wynn design and started manufacturing diaphragm valves. Improvements were made to the traditional straight-through and Weir diaphragm designs to minimize pressure drop, maintain laminar flow and reduce wear and tear.

In 1992, Daleng corporation, its assets and intellectual property were acquired to form TruTech Industries.

In 2008, TruTech industries was acquired by the current management team and TruTech Valve, LLC was formed.