Pneumatic Wafer Type Butterfly Valve

ALIS Valves offers Pneumatic Wafer Type Butterfly Valves designed for automated flow isolation and control in industrial piping systems. These valves feature a circular disc mounted on a central shaft that rotates approximately 90 degrees to open or close the flow passage. The wafer-style body fits between two compatible pipeline flanges and is secured using suitable bolting arrangements, providing a compact and space-saving installation. A pneumatic actuator uses compressed air to operate the disc remotely, enabling integration with automated control panels and process control systems. Depending on the application, these valves are available with cast iron, ductile iron, carbon steel or stainless steel body options, along with suitable disc, seat and sealing materials to meet specified pressure, temperature and process media requirements. Double-acting and spring-return actuator configurations may be available for different control and operating needs.

Pneumatic Wafer Type Butterfly Valves are commonly used in water treatment plants, wastewater systems, HVAC installations, chemical processing, power generation and general industrial fluid handling applications. Depending on the valve construction and material selection, they can handle compatible liquids and gases within their rated pressure and temperature limits. Important selection factors include valve size, flange compatibility, pressure rating, operating temperature, process media, disc and seat materials, and required leakage performance. Buyers should also consider the actuator’s torque rating, compressed air supply pressure, operating frequency, control arrangement and required fail-safe position. Correct actuator sizing and proper alignment between the valve and pipeline flanges are essential for reliable operation and to prevent disc or seat damage. Selecting the appropriate pneumatic wafer type butterfly valve helps provide automated flow control, compact installation and dependable performance in compatible industrial applications.