Forum Class 1-4 Torque Tool

  • ROV Torque Tools

Key Features

  • ISO 13628-8 (API 17D Class 1-4)
  • Max Torque 2,700Nm (2,000 ft Ibs)
  • Dual Range
  • Failsafe mechanism built in for self-release


  • Torque Tool Control System
  • Surface Verification Unit
  • Subsea Verification Unit
  • Control Manifold
  • Subsea Display

What’s Included

  • Torque Tool
  • Class 1 & 2 Sockets (11/16”)
  • Class 3 Socket (1-1/8”)
  • Class 4 Socket (1-1/2”)
  • Cage for USD mount
  • ROV handle
  • Operational hoses
  • Operations Manual

We have the Forum Class 1-4 Torque Tool available for rental from Centurion Subsea Services. It has been specifically developed to provide the highest level of performance. It has integral torque and turns counting sensors for closed loop control.

When matched with a torque tool control manifold, it can provide precise feedback on torque response of any subsea operation.

These can alternatively be utilised by connecting a Universal Subsea Display, which would give a visual read-out of live torque feedback and/or turns counter. The tool conforms to the ISO 13628-8 Fig 18 Class 1-4 bucket interface used extensively in the subsea industry for valve overrides operated by ROV. The tool has latching wings allowing the tool to hold on to the interface.

The latching wings are hydraulically driven forward and spring retracted. Thus, in the case of a loss of hydraulic power the wings will release. The tool uses a high specification drive motor for consistent torque output characteristics, even if used with direct hydraulic pressure control without the feedback sensor. The motor shares casing oil with the gearbox therefore avoiding the need for a separate compensator.

Note that for applying torques less than 108Nm (80 ft lbs) the class 1&2 tool is recommended.

ROV Torque Tools