Twin Piston Quarter Turn Spring Return Actuators

Twin Piston Quarter Turn Spring Return Actuators


Twin Piston Quarter Turn Spring Return Actuators are the optimum automation units in technical and commercial terms for Richter control ball and butterfly valves. These actuators are fully refined and satisfy the high quality requirements of chemical and industrial process engineering. The interfaces to the valve or control valves and signalling units comply with DIN/EN ISO 5211 or VDI/VDE 3845/NAMUR.

  • Operating range
    • Control air pressure 2-10 bar (29-145 psi)
    • Ambient temperatures of -50 to +70 °C (-58 to +158 °F) optional -15 to +160 °C (-5 to +320 °C)
  • Actuator housing
    • Housing of anodised aluminium alloy. Optionally hard anodised and teflonised
    • Cap aluminium alloy epoxy-coated
  • Fastened pre-loaded springs
    • Simple and quick conversion from double-acting to single acting and vice versa
    • High safety during conversion and repair work
  • Blow-out proof pinion shaft
  • Slide bearing for the moving parts
    • Maintenance-free and low-wearing operation
    • Long service life

  • Rugged design
  • Maintenance-free
  • Long service life due to wear-resistant components
  • High degree of safety during conversion and repairs of single acting actuators thanks to the safety springs
  • Blow-out proof pinion shaft
  • Pivoting angle limit can be set from +5 to -5°
  • Comprehensive package of accessories and materials

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