The DSA-Series single-acting spring diaphragm actuators by Master Flo are engineered for robust, long-lasting performance. These actuators feature a generous diaphragm area, allowing operation at low pneumatic pressures, while an opposing spring ensures fail-closed (standard) or optional fail-open action. You can mount various positioners and instruments directly to the actuator for added flexibility.
Choose from 4 diaphragm sizes and a range of springs to meet your specific thrust requirements. Additional options such as manual handwheel overrides, adjustable travel stops, and special materials are available to tailor the actuator to your exact needs. Plus, positioners can be selected to meet various hazardous-area certification requirements.
Operating Medium
Fail Action
Control Signal (positioner dependent)
Feedback Signal (positioner dependent)
Maximum Supply Pressure
Diaphragm Area (in² / cm²)
Hazardous Area Certification (positioner dependent)
Operating Pressure
Operating Temperature
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