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Manual Torque Multiplier Tool (API 17D, ISO 13628-8 Class 1-4)

Additional information

Available for:

Sale & Rental


The Manual Torque Multiplier Tool is designed to allow ROV manipulator operation of API 17D / ISO 13628-8 Class 1-4 rotary valve interfaces. The tool features a torque multiplication stage that increases the manipulators wrist torque beyond its typical output, with two options available for increased torque output. Also, by removal of the torque multiplier stage completely, the tool can be readily reconfigured to operate as low torque tool only.


The tool features an adjustable torque limiting clutch mechanism, which acts to limit the maximum torque that can be transmitted from the ROV manipulator to the valve interface during an ROV intervention operation. This mitigates against any possibility of over-torque and damage to the valve or valve stem.


The end effector is designed so that it is capable of operating Class 1-2, Class 3 or Class 4 valves by way of the smart multi-socket interface. This allows the option for operations to be conducted on these different valve types without the requirement for retrieval to surface for tool reconfiguration. An optional end effector is available to convert the tool to operate type A (flat paddle) or type B & C (T-bar) valve handles.

Key Features

– Tool can be supplued with the following torque ranges-

  • Without multiplier 20-200Nm
  • With standard multiplier 170-850 Nm
  • With high ratio multiplier 500-1700 Nm

Tool supplied with a calibrated torque wrench to allow slip clutch adjustment and pre-dive verification.

Multi-function end effector design allows operations to be conducted on different valve types from Class 1-4 without the requirement to recover the tool for reconfiguration on deck.

Any ROV handle type can be supplied (D-type handle shown)

Fitted with torque resistant compliant mount.

– Made entirely from corrosion resistant materials, suitable for any water depth

Approx weight in air – 28kg

Approx weight in water – 22kg

Supplied in a foam lined transit case.

– Torque Transducer available, contact us for details

Remote Intervention Tooling and Subsea Engineering Specialists

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