tanks for storage of potable water, rainwater or other liquids for human consumption. Thanks to the high resistance and low reactivity of linear high density polyethylene, the underground tanks can be used for the storage of large volumes of liquids (see Compatibility of PE with other fluids).
Use and maintenance:
the underground tanks are not subject to deterioration over time. The materials used assure utmost reliability against oxidation or corrosion. Their mono-block structure guarantees robusticity and strength as they are free of welds that could weaken those parts subjected to internal stresses. Tanks can be bored when the need arises. The smoothness of their surface results in an easy maintenance and their lightness in simple transport and installation. Furthermore, their cost is much lower than that of other materials such as metal, cement and fibreglass.
Thanks to the installation of PE flanged joints, different tanks can be connected to provide higher storage volumes.
black and grey.
Installation: underground installation instructions provided by ROTOTEC.
The underground tanks must not, under any circumstances, be installed above ground; prior to installation, carefully check the integrity of the tanks and tightness of the gaskets; do not install the tanks near to sources of heat; the tanks must be positioned on a flat stable surface; when installing the tanks make sure that no light can filter in so as to prevent the formation of algae; use flexible hoses when connecting to the water system in order to prevent stresses during tank filling and emptying; do not leave the tank without its cover for any length of time; in case of rainwater storage, it is advisable to install a leaf filter chamber upstream of the tank to prevent a build-up of grit, silt, leaves, etc inside the tank; for storing fluids not expressly indicated in this catalogue (see page 68), please contact the technical office.