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Weatherproof actuators

For all types of valves, BERNARD CONTROLS' SQ & ST weatherproof ranges features heavy duty mechanical design and increased reliability, security and user-friendliness for INTEGRATED / INTELLI+® control versions

SQ & ST Ranges

  • Adaptation to all types of valves:
    - Quarter-turn - Multi-turn - Linear
  • Adaptation to specifications of engineering companies
  • EN15714-2 Duty classification:
    - On-Off: Class A
    - Inching/Positioning: Class B
    Modulating: Class C
  • Type of controls:
    - INTELLI+®, intelligent control
  • Easy and fast commissioning
  • Optimized maintenance level



Quarter-turn actuators

SQ Range description

  • Adaptation to all quarter-turn valves:
    - Torque range from 30 to 10 000 Nm
    - Torque values from 10 000 to 600 000 Nm available with gearbox combinations
  • Self-locking at all speeds
  • IP67 as standard (IP68 as an option)

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Multiturn actuators

ST Range description

  • Adaptation to all multiturn valves:
    - Torque range from 60 to 2200 Nm.
    - Torque values up to 20 000 Nm available with gearbox combinations
  • Self-locking at all speeds
  • IP68 5m/72H and NEMA6 as standard


Official representatives of



»  Bartec
»  Clock Spring
»  Bernard Controls
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