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.
| Model Number | Quick fit puller | Bolt Thread Size | Capacity | Effective area cm2 | Stroke mm | Weight kg | Tommy Bar | |
|---|---|---|---|---|---|---|---|---|
| kN | tonnes | |||||||
| STU1-100 | QFP1-100 | 1" - 8UN | 256 | 26.1 | 17.1 | 20 | 3.4 | TTB06 |
| STU1-112 | QFP1-112 | 1 1/8"- 8UN | 256 | 26.1 | 17.1 | 20 | 3.4 | TTB06 |
| STU2-125 | QFP2-125 | 1 1/4"- 8UN | 430 | 43.9 | 28.7 | 30 | 6.0 | TTB08 |
| STU2-137 | QFP2-137 | 1 3/8"- 8UN | 430 | 43.9 | 28.7 | 30 | 6.0 | TTB08 |
| STU3-150 | QFP3-150 | 1 1/2"- 8UN | 553 | 56.4 | 36.9 | 30 | 7.5 | TTB10 |
| STU3-162 | QFP3-162 | 1 5/8"- 8UN | 553 | 56.4 | 36.9 | 30 | 7.5 | TTB10 |
| STU4-175 | QFP4-175 | 1 3/4"- 8UN | 756 | 77.1 | 50.4 | 30 | 9.8 | TTB10 |
| STU4-187 | QFP4-187 | 1 7/8"- 8UN | 756 | 77.1 | 50.4 | 30 | 9.8 | TTB10 |
| STU5-200 | QFP5-200 | 2" - 8UN | 1168 | 119.1 | 77.9 | 30 | 14.5 | TTB12 |
| STU5-225 | QFP5-225 | 2 1/4" - 8UN | 1168 | 119.1 | 77.9 | 30 | 14.5 | TTB12 |
| STU6-250 | QFP6-250 | 2 1/2" - 8UN | 1649 | 168.1 | 109.9 | 30 | 22.8 | TTB14 |
| STU6-275 | QFP6-275 | 2 3/4" - 8UN | 1649 | 168.1 | 109.9 | 30 | 22.8 | TTB14 |
| STU7-300 | QFP7-300 | 3" - 8UN | 2483 | 253.2 | 165.6 | 30 | 35.6 | TTB16 |
| STU7-325 | QFP7-325 | 3 1/4" - 8UN | 2483 | 253.2 | 165.6 | 30 | 35.6 | TTB16 |
| STU7-350 | QFP7-350 | 3 1/2" - 8UN | 2483 | 253.2 | 165.6 | 30 | 35.6 | TTB16 |
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 30 mm 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 256 to 2482 kN Bolt sizes 1" to 3½” diameter Working pressure 1500 bar 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 Download Enquire Sub-Sea Bolt Tensioners Imperial Range
Fill in the form to discuss the right configuration for your application. Our team can advise on torque range, accessories, and lead times.
