Tri-Seal Valve high-performance butterfly valves have been used reliably in multiple industrial markets since its introduction in the 1960’s. Previously part of Litton, Watts Regulator and Circor International, the product line was originally known as the Contromatics Quarter-Flex high-performance butterfly valve.

Tri-Seal Valve purchased the Quarter-Flex high-performance butterfly valve product line in 2007. Continuing its long-standing history of quality and performance Tri-Seal continues to manufacture the valve in our American facilities. We are proud of the remarkable success record of our Quarter-Flex high performance butterfly valve which is valued throughout all industrial markets, including power generation, marine, industrial and Navy shipyard applications.

McWane Plant & Industrial purchased the assets of Tri-Seal Valve in 2021.  We take great pride in being an American cast, machined, and tested high-performance butterfly valve manufacturer in an industry flooded with foreign made valves. Our experienced staff offers service and support for distribution, end-users, engineering contractors, and original equipment manufacturers. We strive to deliver top quality products and maintain a level of customer service unmatched in the industry.