STU Standard Range

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Hi-Force STU series sub-sea bolt tensioners are designed and manufactured to suit the demanding requirements of divers operating in harsh sub-sea environments. With an easy to operate two piece design comprising of a quick fit/ release threaded puller and a hydraulic load cell with integral bridge and an extra long 1.18 inch piston stroke to reduce re-setting operations. Hi-Force STU series sub-sea bolt tensioners offer a consistent, reliable and cost effective method of tensioning sub-sea bolted joints. All hydraulic load cells are suitable for different thread sizes and interchangeable quick fit/release pullers can be ordered separately, as required, resulting in even greater flexibility and cost savings.

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• Capacities from 20 to 279 tons

• Bolt sizes 1" to 3½” diameter

• Working pressure 21750 psi

• Single acting design with manual piston retraction

• High grade alloy steel construction

• Simple two piece design for easy operation by divers subsea

• Visible maximum piston stroke indicator

• Dual quick connect couplings for easy connection

• Designed to fit most sizes of ANSI and API flanges and some Compact flanges

• Interchangeable quick fit pullers to cover secondary bolt sizes for each STU model

• Customized and special design tensioners are available on request