Diaphragm Actuator
Resistant
Sealing
Operation
Long Life
Alis Valves offers high-performance Diaphragm Actuators designed for accurate and reliable control of industrial valves. These actuators use air pressure acting on a flexible diaphragm to create linear motion, making them ideal for globe control valves and other modulating applications. Widely used in process industries, diaphragm actuators ensure precise flow control, quick response, and safe operation even in critical environments.
Specifications
Operation
Pneumatic (Air Operated)
Action Type
Air to Open / Air to Close
Air Supply
3 to 6 Bar
Diaphragm Material
Nitrile / EPDM
Control Signal
With Positioner (4–20 mA)
Motion
Linear
Fail Safe
Spring Return (Fail Open / Fail Close)
Body Material
Cast Aluminum / Steel
Mounting
Direct Mount on Control Valve
Temperature Range
Up to 120°C
Frequently Ask Questions
A diaphragm actuator is a pneumatic device that uses air pressure to move a flexible diaphragm and operate a valve. It converts air energy into linear motion for precise control.
Alis Valves is a trusted manufacturer offering high-quality and reliable diaphragm actuators. They provide durable solutions with good support and customization.
It works by applying air pressure on a diaphragm which moves against a spring. This movement controls the valve opening or closing.
Yes, they can be integrated with positioners and control systems. This allows accurate and automatic valve operation.
They are used for controlling flow, pressure, and temperature in control valves. Common in industries like chemical, power, water, and oil & gas.
Choose based on valve size, air pressure, fail-safe requirement, and application conditions. Also consider stroke length, thrust, and accessories like positioners.
Diaphragm actuators offer precise control and are used in control valves. Piston actuators provide higher force and are used in heavy-duty applications.
Fail-safe means the actuator moves to a safe position (open or close) when air supply fails. This is achieved using a spring return mechanism.
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