Collection:3-Way Pneumatic Ball Valves

Explore Tameson's wide range of 3-way pneumatic ball valves from leading global manufacturers. These valves control the flow of media - liquids or gases - remotely, using a rotating ball with a bore. A pneumatic actuator connects to the valve and converts compressed air into mechanical motion, rotating the ball 90° (a quarter turn) to switch between flow paths. For larger valves, pneumatic actuation is often more cost-effective than electric actuation.

A 3-way pneumatic ball valve has three ports and a ball with a bore that controls how media flows between them. Two bore designs are available: L-port and T-port, named after the shape of the flow path inside the ball.

A T-port valve can mix media from two inlets into one outlet, or distribute one inlet to two outlets. An L-port valve redirects flow rather than mixing it - for example, connecting one of two tank inputs to a single outlet, so you always have output flow but can choose which tank supplies it. Because the actuator only rotates 90°, pneumatic L-port and T-port valves switch only between two positions. Because port connections differ between designs, always check the bore design to get the flow pattern you need.

3-way pneumatic ball valves are available in a range of housing materials, seals, and sizes to suit different applications.