Forum ISO 13628-8 Class 1-4 (API 17D) Subsea

  • ISO 13628-8 fig 18 (API 17D) class 1-4
  • Max torque 2700Nm / 2000ft lbs
  • 4000m / 13,123ft rated
  • Interchangeable shafts
  • Self contained unit
  • Rechargeable battery or ROV power


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This unit has been developed to give subsea confirmation of torque tool calibration. It consists of a standard class 1-4 torque reaction bucket with a compact torque sensor. To change shafts only one bolt has to be undone.

Torque is displayed on separate universal subsea display unit. The display contains a power on indicator (green LED) and battery low indicator (red LED). The unit can operate continuously for 30 hours, but if no activity is detected after 10 minutes the unit will go into sleep mode and the display will power down, sleep mode can be maintained for up to eight days. The display will wake up as soon as there is a change in signal.