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Flexibore® 400
Engineered for extreme depths
Flexibore® 400
For extreme pressure and maximum performance
Flexibore 400 is the premium flexible riser hose for ultra-deep bore pumping up to 400 metres. Designed for mine operators, utilities, and contractors managing the largest submersible pumps, it replaces rigid poly, fibreglass, and stainless steel pipes with a lightweight, high-tensile system that withstands loads up to 30 tonnes and burst pressures of 10,000 kPa. Its pressure-dilating design reduces friction loss and prevents iron bacteria build-up, ensuring long-term efficiency and pump protection. Compact to transport, quick to install, and safe to handle, Flexibore 400 delivers proven performance—proudly Australian-made and rigorously tested for extreme conditions.
Technical Data
| Diameter (ID) | 76 mm | 102 mm | 127 mm | 152 mm |
| 3 | 4 | 5 | 6 | |
| Max. operating head | 400 m | 400 m | 400 m | 400 m |
| Min. burst pressure | 10000 kPa | 10000 kPa | 9000 kPa | 8000 kPa |
| Peak tensile load | 14 t | 20 t | 25 t | 30 t |
| Recommended max. tensile load | 7 t | 10 t | 12.5 t | 15 t |
| Weight of hose/m | 1.5 kg | 2.3 kg | 3 kg | 3.6 kg |
| Weight of hose with water/m at 10% dilation | 6.5 kg | 11.3 kg | 16.9 kg | 23.6 kg |
| Max. flow rate | 18 L/s | 40 L/s | 55 L/s | 90 L/s |
| Coupling OD | 120 mm | 150 mm | 180 mm | 205 mm |
| Weight of S/S coupling | 6 kg | 8 kg | 12 kg | 14 kg |
| Fitting bolt torque* | 30 Nm | 30 Nm | 30 Nm | 55 Nm |
| Part # Flexibore 400 hose | HFD076XUA | HFD102XUA | HFD127XUA | HFD152XUA |
| Part # Flexibore 400 coupling set in 316 S/S** | CLF076DDE | CLF102DDE | CLF127DDE | CLF152DDE |
*Rocol nickel-based anti-seize or equivalent must be applied to the bolt thread.
**Coupling sets in Duplex 2205 & Super Duplex 2507 available on special order.
Other Specs
| Water pH | 3 to 9 |
| Max. operating temp | 70 ℃ |
| Max. diametric dilation | 10% |
| Max. extension*** | 2% |
| Safety factor | 2:01 |
***within recommended operating parameters.
Large choice of diameters & lengths
Available sizes in lengths up to 400 m: 76 mm, 102 mm, 127 mm, and 152 mm
Long-lasting & high-quality product
Our flexible bore water hose is totally corrosion and microbiological damage resistant and will not succumb to iron bacteria build-up.
Intended use
Flexibore systems are intended for upstream raw water transfer only, and it is assumed that suitable filtration and treatment are installed prior to connection to regulated potable water plumbing systems.
Features
- Ultra-deep bore capability – pumps water from depths of up to 400 m
- Extreme burst pressure – up to 10,000 kPa
- Ultra-high tensile load – supports pumps up to 30 tonnes peak load
- Dilates under pressure – reduces friction loss & prevents iron bacteria build-up
- Flexible & portable
- Secure cable management
- Quick-fit couplings
- Rigorously factory tested
- Available in continuous lengths up to 500 m
- Proudly Australian Made
- Designed & manufactured locally
Primary uses
- Bore water pumping (up to 400 m depth)
- Large submersible pumps in mining & utilities
- Potable water supply systems
- Industrial groundwater extraction
- Deep dewatering projects
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Frequently Asked Questions
FAQs
There are 3 recommended methods for safely installing pumps with Flexibore® : vehicle assisted, crane assisted, and hand assisted. The method chosen will depend on the bore depth, pump weight and access space.
Flexibore® couplings are designed to be fitted onto the hose during installation. Once the coupling has been attached to the pump, the hose is pushed onto the coupling tail; 2x 3-piece clamp sets are then securely fastened around the hose using an Allen key.
There are 2 methods to secure the power cable to the hose: Crusader Hose-approved heavy-duty cable ties & FlexiStraps.
As long as the total weight of the pump and cable falls within the safety margin of the max. tensile load, then no safety cable is required. If the total weight is higher than the recommended max. tensile load, please contact us to discuss safety cable usage.
