The Mcdermott Dampers D-200039 20042 Pneumatic Steel Wafer Butterfly Valve, 12in, is a pneumatic-actuated butterfly valve with a steel wafer body designed for installation between flanges. This 12in nominal size valve uses pneumatic actuation to modulate flow and provide isolation in piping systems. Identified by part numbers D-200039 and 20042, it reflects Mcdermott Dampers’ wafer-style engineering for compact, quick-actuation valve control.
