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ISO 9001:2015

D52/R52 Series Spring-Diaphragm Pneumatic Linear Actuators

D52/R52 Series actuators are linear spring diaphragm pneumatic actuators designed for reliable operation of control valves. The D52/R52 line of high power, multispring diaphragm actuators are compact and light.  The D52/R52 is a rugged unit available in a combination of case sizes, strokes and springs to satisfy a wide range of applications.


  • Compact, multi-spring design.
  • Hysteresis is less than 0.8% of full stroke with positioner.
  • Linearity is less than 1.5% of full stroke with positioner.
  • Stainless steel stems are standard for maximum performance in corrosive environments