Very strong, with a thick wall and thick spiral, flexible hose designed for vacuum extraction and transport of abrasive materials such as sand, gravel, and grain. Suitable for all types of industries, particularly used for loading and unloading silos, vehicles, and suction excavators, as well as transloading from tankers, etc. The thick wall and very dense reinforcing spiral provide high resistance to vacuum. Smooth on the inside, non-compressible, not overly flexible but elastic, even at low temperatures. Excellent abrasion resistance, also resistant to microbes and hydrolysis. Non-toxic, free from halogen compounds and plasticizers. Resistant to oils and gasoline. The hose is marked with an arrow indicating the correct direction of medium flow. The wall thickness of the hose is measured between the spirals. Other diameters may be available upon special request. The ECO 2.0 and ECO 2.5 hoses, regardless of their thickness, differ in construction and consequently in parameters. The ECO 2.0, due to its dense spiral, has greater resistance to vacuum but is less flexible, while the ECO 2.5, with a larger spiral pitch, is more flexible and elastic, especially in larger diameters. The ECO hose is produced in a manufacturing process compliant with sustainable development policies, using raw materials sourced from recycling clean waste from the production process, renewable energy, closed water cycles, and other innovations. Hose material: transparent polyester-polyurethane. Reinforcement: steel wire spiral. Wall thickness measured between spirals: 2.0 mm (ECO 2.0), 2.5 mm (ECO 2.5). Operating temperature: from -40°C to +100°C (temporarily up to +125°C).