TopTank 300L Water Tank, UV Stabilized Cylindrical Polyethylene

TopTank 300L Cylindrical Tank

The TopTank 300L Water Tank provides a compact and durable solution for residential or light commercial potable water storage. This vertical cylindrical unit utilizes high-quality food-grade polyethylene to ensure liquid safety and structural integrity. Plumbers and site managers select this specific model for its footprint-to-capacity ratio in restricted spaces or as a secondary header vessel.

Built for the Job

This vessel serves as a reliable buffer for municipal supply fluctuations or as a dedicated storage unit in gravity-fed systems. Contractors often install these units in utility rooms, balconies, or small outdoor footprints where larger vertical storage options are impractical. The rotational molding process ensures the body has no seams, which significantly reduces the risk of stress fractures or leaks under constant hydrostatic pressure. Its lightweight design allows for easier manual positioning on site before plumbing connections are finalized.

• Buffer storage for domestic borehole or municipal water systems.

• Header tank applications for gravity-fed plumbing layouts.

• Small-scale rainwater harvesting for garden or cleaning use.

Product Highlights

Rotomoulded Construction

The single-piece build eliminates weak points and structural joints, ensuring the container remains watertight over long-term use.

Material Performance

• Manufactured from 100% food-grade polyethylene for safe drinking water storage.
• Integrated UV stabilizers prevent the plastic from becoming brittle when exposed to direct sunlight.
• Black lining or opaque walls inhibit algae growth by blocking light penetration.

Technical Specifications

What’s Included

• 1 x 300 Litre Cylindrical Water Tank

• 1 x Secure-fit Threaded Lid

On-Site & Workshop Notes

• Place the unit on a smooth, level concrete plinth that fully supports the base to prevent deformation.

• Use flexible pipe connectors for the outlet to accommodate slight expansion and contraction of the plastic.

• Ensure all inlet and overflow holes are properly screened to prevent debris or insect ingress into the potable supply.

• Avoid over-tightening threaded bulkhead fittings to prevent stripping the polyethylene threads.