The 500 & 1000 vertical cylindrical tanks are primarily intended for storing drinking water. Other permitted applications include storing rainwater, irrigation water, or food-grade liquids (oil, milk). These vertical cylindrical tanks are designed for above-ground installation, at atmospheric pressure, and fluid temperatures ranging from 4 to 45°C. The delivery package includes: tank, lid, and gasket for lid sealing. Material: The tanks are made from 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 310, made of PP, threaded, black, with gasket, and incorporated brass metal inserts. The 500 L tank is manufactured with a 1″ connection at the bottom. The 1000 L tank is manufactured with connections: – 1×1″ and 1″ at the bottom – 1×1″ at the top – The tanks have not been designed and CANNOT be used for pressures below or above normal atmospheric pressure (they cannot be used for pressurized or vacuum storage). – The tanks have not been designed and CANNOT be used for fuels or other petroleum products, nor for chemically aggressive substances (acids, bases, etc.).