Sub-Sea-Bolt-Tensioners-Imperial-Range-Small2562020105110.jpg

STU Standard Range

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.

  • 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

183202012560-Big.jpg
Sub-Sea-Bolt-Tensioners-Imperial-Range-Big2032016134615.jpg

STU Standard Bolt Tensioner  Specifications      
                   

Note: Tommy bars are not included. Hi-Force recommends one tommy bar for every four tensioners. Please note that the tommy bar listed will fit related quick fit puller; a different size may be required for the drilled hexagon nut.