Features & Benefits

  • Totally enclosed, weatherproof housing in high strength nodular cast iron, suitable for use in hostile environments.
  • Constant output torque throughout the 90° stroke.
  • Adjustable bronze sliding block ensures low transverse forces.
  • Minimal friction nitrided rack.
  • Precise angular stroke adjustment between 80° and 100°.
  • Electroless nickel plated polished cylinder and square output shaft for corrosion resistance and minimal friction.
  • Low hysteresis and high sensitivity floatingtype piston seals prevent sticking problems.
  • RPS spring module is fully encapsulated, ensuring personnel safety and simplifying assembly.
  • RPS mountable as spring to close or spring to open without modification.
  • Lever or jackscrew manual override.
  • Extensive range of accessories available.
  • Special coatings for offshore or corrosive environments.


General application 
RPD and RPS actuators are designed to provide maximum torque output with minimum supply pressure for any quarter turn application such as ball, plug, butterfly valves or dampers. 

Safety Integrity Level: (IEC 61508-1÷7:2010): SIL 3 
Area Classification: (ATEX): II 2GD 135°C (T4) 
Enclosure Standards: (IEC 60529): IP67M 
(ANSI/NEMA 250): NEMA 4, 4X, 6 
Pressure Equipment Directive: PED 97/23/EC 
Machinery Directive: 2006/42/EC 

Technical data 
Supply pressure: 12 barg maximum 
Supply medium: Air, nitrogen or sweet gas 
Output torques: Up to 3,700 Nm 
Ambient temperature 
Standard range: -20°C to +100°C / -20°F to +210°F 
Extended range: -60°C to +180°C / -70°F to +350°F 

Documents & Drawings

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