Pneumatic 3-Piece Ball Valves

Pneumatic 3-piece ball valves combine a stainless steel 3-piece ball valve body with a pneumatic quarter-turn actuator for automated shut-off in industrial piping systems. The actuator uses compressed air to drive the valve to the open or closed position, making it suitable for applications where fast response, remote operation, and simple pneumatic control are required.

The 3-piece valve body allows the center section to be removed for inspection, cleaning, or seat replacement while the end connections remain installed in the pipeline. This structure helps reduce maintenance time compared with one-piece ball valves, especially in process lines where internal inspection or regular servicing may be required.

Threaded, socket-welded, butt-welded, sanitary clamp, and flanged end connections are available for different piping layouts. Threaded versions are convenient for utility and instrument lines, welded versions provide a more permanent pipe connection, sanitary clamp versions support quick disassembly, and flanged versions are suitable for standard bolted pipeline installation.

Single-acting and double-acting pneumatic actuator options are available. The single-acting version uses air to open and spring return when the air supply is interrupted, while the double-acting version uses air pressure for both opening and closing. Pneumatic accessories such as solenoid valves, limit switch boxes, pneumatic positioners, FRL units, and pneumatic handwheels can be supplied according to the required control method.

Pneumatic 3-piece ball valves are commonly used in water treatment, chemical processing, industrial utilities, oil and gas systems, skid-mounted equipment, and general automated fluid-handling lines requiring maintainable stainless steel ball valve construction.