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IMI CCI
MSD-III - Multi-Spring Diaphragm Actuator
A pneumatic multi-spring diaphragm actuator offering precise control and reliability across applications.
Ensures precise, repeatable control with multi-spring force and rolling diaphragm technology.
Provides robust, long-lasting performance with a durable one-piece cast yoke and reinforced diaphragm.
Delivers fast response and accuracy with minimised air chamber volume for optimised actuation.
Features
The MSD-III Diaphragm Actuator is a high-performance pneumatic actuator designed for precision control in severe service applications. Its multi-spring design ensures reliable fail-open or fail-close functionality, while a rugged one-piece cast yoke and nylon-reinforced diaphragm provide exceptional durability. Available in direct-acting (DA) and reverse-acting (RA) configurations, it delivers fast response, excellent linearity, and long operational life. The minimised air chamber volume improves response times, and multiple sizes support a wide range of applications. An optional manual override enhances operational flexibility, making it a dependable solution for demanding industrial environments.
Key features
Multi-spring pneumatic actuator
DA and RA configurations
Strong cast yoke
Reinforced diaphragm
Compact air chamber
Stroke sizes: 20mm to 130mm
Operating pressure: 4.2–5.0 kgf/cm²
Temperature range: -29°C to 80°C (-45°C/-55°C options)
Top or side handwheel manual override option
Precision in severe service applications
Specifications
Ambient Temperature (°C)
-29 to 80
Manual Override
Yes
Cylinder Diameter (mm)
250
550
Material
Carbon Steel
Design Type
Single Acting With Spring
Operating Pressure (bar)
5 to undefined
Supply Medium
Instrument Air
Certification
ATEX
SIL3
Resources
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