Evaporation reduction

There are two major causes of water evaporation in tanks: temperature and surface area.

Cover Ball offers an effective and cost-effective control system for these two problems. The spheres provide a floating cover that takes up approximately 91% of the surface.
At the same time the spheres prevent UV rays from reaching the water and thus reduce its heating. By their nature, the spheres adapt to tanks of any size and shape. When the water level drops, the balls adapt to the situation again by stacking on themselves. When the water level rises, the balls become a single layer again on the surface.

Cover Ball provides a low-cost, maintenance-free solution for evaporation abatement in any potable water, wastewater or industrial treatment water tank in general.

Technical Features

  • Easy installation. The spheres, once introduced into the tank, naturally assume an equal distribution over the area
  • Rain water. Unlike fixed roofs, the spheres allow rainwater to pass through. This allows you not to have any type of stagnation
  • No Maintenance. No type of maintenance or reintegration over time
  • The spheres follow the level of the liquid and allow any type of work inside the tank
  • The material with which they are built (HDPE – high density polyethylene) guarantees a long life to the cover
  • Virgin HDPE, therefore totally recyclable at the end of its life


  • Quick and easy installation
  • Each sphere is built to live a long time and free from "Biosphenol-A"
  • No type of maintenance
  • It allows any type of operation through the liquid
  • Fast and concrete solution against odor problems
  • Significant reduction of polluting gases
  • Reduction of UV exposure
  • Excellent deterrent against birds
  • Algae reduction
  • Wind resistant
  • Excellent behavior with frost, snow and rain water
  • Continuous coverage 365 days a year