Forbes Marshall - Trusted Partners in Steam Engineering & Control Instrumentation

811 U and 812 U Series

The pneumatic actuators can be opened or closed using spring force or control air. These actuators are field reversible and available with either single spring or multi-spring options. The compressed spring ensures that pneumatic actuator always achieves fail-safe condition on air failure without
any additional intervention.

Digitally Enabled
  • Field reversible
  • Suitable for high actuating thrust process
  • Light weight and corrosion resistant housing
  • Low maintenance and universal design
  • Suit different accessories
  • Can be modified at the site to suit customer plant/control philosophy with minimal changes

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