Red Valve”s Type A pinch valve features a full-port opening and straight-through flow path to eliminate turbulence when open. The simple, two-piece body acts as a built-in pneumatic actuator. Fabricated elastomer sleeves offer maximum wear resistance and sealing on entrapped debris. Double-wall and cone sleeves are also available for extremely abrasive and high-pressure applications. The Type A is the original air-operated pinch valve, designed by Red Valve in 1953 for the world’s first coal slurry pipeline.