TopTank 690L Rectangular Tank
The TopTank 690 Litre Tank is a high-density polyethylene storage solution designed specifically for restricted height installations in residential and commercial loft spaces. This rectangular unit provides a reliable secondary or primary water reserve where vertical clearance is limited. The construction utilizes food-grade materials to ensure water safety and long-term durability in fluctuating attic temperatures.
Built for the Job
Plumbers and site supervisors specify this model for gravity-fed systems and header tank applications. The low-profile design allows the vessel to pass through standard attic hatches and sit securely between timber rafters. Its rectangular footprint maximizes storage capacity without requiring the overhead height of cylindrical alternatives. The unit withstands the structural pressures of 690kg of water through its reinforced wall design. Professionals rely on this tank for its impact resistance and ease of drilling for custom inlet and outlet configurations.
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Gravity-fed domestic water systems in low-clearance roof voids.
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Expansion and feed tanks for central heating or large plumbing loops.
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Potable water storage in commercial buildings with restricted plant rooms.
Product Highlights
- Rotational Molding Construction
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The seamless single-piece build eliminates joints or weak points that typically fail under hydraulic pressure.
- Material Specifications
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- Manufactured from UV-stabilized Linear Low-Density Polyethylene (LLDPE).
- Algae-resistant dark pigment prevents light penetration to maintain water hygiene.
Technical Specifications
| Specification | Detail |
|---|---|
| Capacity | 690 Litres |
| Shape | Rectangular Loft |
| Material | Food-grade LLDPE |
| Dimensions | Approx. 1740 x 820 x 620 mm |
| UV Rating | UV Stabilized |
What’s Included
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1 x 690 Litre Rectangular Loft Storage Tank
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1 x Secure Fitting Lid
On-Site & Workshop Notes
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Ensure the supporting platform is level and extends beyond the base of the storage vessel.
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Check that ceiling joists are reinforced to carry the static load of the full container.
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Use standard hole saws for fitting ball valves and overflows to the designated bossing areas.
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Avoid dragging the unit across abrasive concrete surfaces to prevent thinning the base material.
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