The 500 & 1000 oval tanks are primarily intended for storing drinking water. Other permitted applications: rainwater storage, irrigation water or food liquids (oil, milk). The oval tanks are designed for above-ground installation, at atmospheric pressure and fluid temperatures in the range of 4-45°C. The delivery package includes: tank, lid and gasket for lid sealing. Material: The tanks are made of UV-stabilized polyethylene class 8. Coloring is done with organic (alpha)-stabilized pigments certified for food use, with good resistance to light, UV radiation and temperature. Structure and color: single-layer, blue. Lid: DN 200 PP, threaded, black, with gasket, and incorporated brass metal inserts. The 500 l oval tank: is manufactured with one 1″ connection at the bottom. The 1000 l oval tank: is manufactured with two 1″ connections at the bottom. – The tanks have not been designed and CANNOT be used for pressures below or above normal atmospheric pressure (cannot be used for pressurized or vacuum storage). – The tanks have not been designed and CANNOT be used for fuels or other petroleum products as well as for chemically aggressive substances (acids, bases, etc.).