FQ Quarter Turn Failsafe

Operating principle of Failsafe actuator

The activation of an emergency signal triggers the immediate opening or closing of the backup device, without the need of any external power source.

This signal can be activated following:

  • an abnormal event (fire, overflow …)
  • an automatic control
  • an operator’s action
  • or the lack of power supply

When the power supply is restored (no resetting of the spring is required), the actuator is immediately available for normal operation.

Examples of applications: storage and distribution of gas and dangerous liquids, fire protection systems, protection of chemical facilities, air conditioning and ventilation of hazardous areas.

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