Pneumatic Diaphragm Globe Control Valve

ALIS Valves offers Pneumatic Diaphragm Globe Control Valves designed for precise flow regulation and automated control of industrial process media. These valves feature a globe-style body with a movable plug and seat arrangement that adjusts the flow passage, while a pneumatic diaphragm actuator converts compressed air pressure into controlled stem movement. This arrangement enables the valve to regulate flow in response to a pneumatic or compatible control signal, helping maintain desired process conditions. Depending on the design, these valves can be supplied with different body materials, trim configurations, pressure ratings, diaphragm materials and end connections to suit specific operating requirements. Their modulating capability makes them suitable for applications requiring continuous adjustment of flow rather than simple on-off operation.

Pneumatic Diaphragm Globe Control Valves are commonly used in chemical processing, power generation, water treatment, oil and gas facilities, steam systems and other industrial applications requiring accurate control of flow, pressure, temperature or liquid level. Depending on the valve construction and material selection, they can handle compatible liquids, gases and steam within their rated pressure and temperature limits. Important selection factors include valve size, flow coefficient (Cv or Kv), operating pressure, temperature range, process media, required flow characteristic, trim material and actuator air supply pressure. Buyers should also consider control signal compatibility, positioner requirements, leakage class and the valve’s ability to handle the expected pressure drop. Correct sizing and actuator selection help achieve stable control and reliable operation. Selecting the appropriate pneumatic diaphragm globe control valve supports precise process regulation, efficient automation and consistent performance in compatible industrial systems.