HydroTank 302 Injection Hose – High-Performance Resin Injection Waterbar
The HydroTank 302 Injection Hose is an advanced waterbar system designed for sealing construction joints in earth-retaining and water-retaining concrete structures. When injected with a compatible polyurethane or acrylic injection resin, the system permanently seals cracks, capillaries, pores, and honeycombing within the concrete structure, enhancing the water tightness of ‘Type B’ waterproofing systems.
This high-performance injection hose features micro-ports spaced evenly across its entire circumference. When injection resin is applied at 1-bar pressure or higher, these ports open to allow the low-viscosity resin to deeply penetrate and seal the surrounding concrete, ensuring long-lasting water resistance.
Key Benefits:
✔ Superior Water Resistance – Resistant to permanent water pressure of 2 bar, providing a watertight joint seal.
✔ Compatible with Multiple Resins – Works effectively with polyurethane and acrylic injection resins such as Newton 322-SP and Newton 323-SA.
✔ No Structural Displacement – The injection hose remains intact and undisturbed during concrete compaction.
✔ Labour & Cost Efficient – Eliminates the need for a kicker or rebate, reducing site labour costs.
✔ Durable & Weatherproof – The injection hose withstands exposure to weather and site work delays without compromising performance.
✔ Guaranteed Flow & Deep Sealing – The star-shaped interior geometry ensures continuous flow of resin even when navigating sharp bends.
✔ Quicker to Install – More efficient than conventional waterbars, reducing installation time.
✔ Prevents Reinforcement Corrosion – Seals the entire joint rather than just the immediate area, preventing water from reaching reinforcement steel.
✔ Chemical Resistance – Resistant to sewage, chlorine, and sulphides, making it ideal for aggressive environments.
✔ Long-Term Integrity – Not affected by wet/dry cycles and maintains sealing effectiveness for the lifetime of the structure.
✔ No Swelling Issues – Unlike bentonite-based waterbars, it will not free-swell into voids and wash away.
Typical Applications:
🔹 Concrete walls supported from a raft – With or without a kicker.
🔹 Within concrete walls – For maximum structural integrity.
🔹 Within concrete rafts or slabs – Ensuring permanent waterproofing.
🔹 Concrete slab to piled walls – Providing reliable joint sealing.
🔹 Concrete slab to brick/block wall – Enhancing structural resilience.
Suitable Substrates:
✔ Reinforced Concrete – Standard and water-retaining structures.
✔ Steel Piled Walls – Welded flange required.
✔ Brick or Concrete Block Walls – Suitable for various construction settings.
Technical Data:
| Feature |
Result |
| Material |
Formulated closed-cell plastic |
| Colour |
Light Blue |
| Profile |
Round with 4 x semi-circular notches |
| External Diameter |
13.0mm |
| Internal Diameter |
6.0mm |
| Micro-Port Length |
5.0mm |
| Micro-Port Spacing |
15mm |
| Micro-Port Opening Pressure |
> 1 bar |
| Application Temperature |
-10 to +50°C |
| Service Temperature |
-10 to +50°C |
| Minimum Required Concrete Cover |
100mm |
| Water Resistance (Sealed with Newton 322-SP) |
2 bar |
| Maximum Installed Hose Length |
10-12m |
| Packaging – Coils |
120m |
Available Variants & Packaging:
✔ HydroTank 302 Injection Hose (Code: 302) – 120m coils
✔ HydroTank 302K60 Injection Hose Kit (Code: 302K60) – 60m injection hose kit
✔ HydroTank 302K120 Injection Hose Kit (Code: 302K120) – 120m injection hose kit
📞 Need expert advice? Contact our technical support team at 01268 472358 for guidance on product selection, installation support, and bulk order pricing.
