Pneumatic Wafer Butterfly Valves

Pneumatic wafer butterfly valves combine a resilient-seated wafer butterfly valve with an AT series pneumatic quarter-turn actuator for automated isolation and general throttling duties in industrial piping systems.

The wafer body is installed between mating pipe flanges, providing a compact and lightweight valve solution for medium- and large-diameter pipelines. Compared with flanged butterfly valves, the wafer design requires less installation space and can help reduce valve weight, making it suitable for pipework layouts where space, weight, and installation cost need to be controlled.

Different body, disc, and seat material options are available to suit the process medium and operating conditions. NBR, EPDM, VITON, and PTFE seat options allow the valve to be selected for water, air, oils, compatible chemicals, and other industrial media within the applicable material limits. Stainless steel and nickel aluminum bronze disc options are also available where improved corrosion resistance is required.

Single-acting and double-acting pneumatic actuator options are available. The single-acting actuator uses air to open and spring return when the air supply is interrupted, while the double-acting actuator uses compressed air 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 wafer butterfly valves are commonly used in water and wastewater treatment, HVAC systems, industrial utility lines, chemical process systems, compressed air pipelines, power plants, and general fluid-handling applications requiring automated butterfly valve operation.