TopTank 5000L Cylindrical Water Tank, UV Stabilized Polyethylene

5000L Cylindrical Storage Tank

The TopTank 5000L Water Tank provides a high-capacity storage solution for potable water and rainwater harvesting on residential, commercial, and agricultural sites. This vertical cylindrical unit utilizes food-grade polyethylene to ensure liquid safety and long-term structural integrity in harsh outdoor environments.

Built for the Job

Site supervisors and plumbers specify this storage vessel for its robust rotational molding construction. Unlike fabricated metal or welded plastic alternatives, this seamless body eliminates weak points, significantly reducing the risk of stress fractures or leaks under hydrostatic pressure. The material choice is critical for Kenyan climatic conditions, as the outer layer incorporates UV stabilizers to prevent brittleness and degradation from prolonged sun exposure. This makes the container suitable for roof installations or ground-level placement on a prepared concrete plinth. The internal surface remains smooth and non-porous, discouraging the growth of algae and bacteria, which is a primary requirement for domestic water supplies.

• Bulk water storage for multi-unit residential developments and commercial office blocks.

• Rainwater collection systems for irrigation, livestock, and secondary greywater usage.

• Buffer tank installation for borehole systems or municipal supplies with inconsistent pressure.

Product Highlights

Monolithic Construction

The unit is manufactured using a single-piece rotomolding process that ensures uniform wall thickness and zero joints.

Material Specifications

• Virgin Linear Low-Density Polyethylene (LLDPE) for high impact resistance.
• Food-grade certified interior lining safe for human consumption.
• Black or dark green pigmentation to block light and inhibit organic growth.

Technical Specifications

What’s Included

• 1 x 5000 Litre Cylindrical Polyethylene Tank

• 1 x Heavy-duty Threaded Manhole Cover

• Standard Outlet and Overflow Fittings (Pre-installed)

On-Site & Workshop Notes

• Ensure the installation base is a level, reinforced concrete slab at least 100mm thick to support the 5-ton full weight.

• Use flexible pipe couplings for the main outlet to accommodate minor settling or thermal expansion without stressing the tank wall.

• Avoid placing the 5000-litre container directly on loose soil or uneven hardcore, as this leads to base deformation and eventual failure.

• Regularly inspect the threaded lid to ensure it remains tight, preventing dust and insect ingress into the potable water supply.