Cot Rehau Rautitan Ø25-90° Rehau Rautitan Ø25-90° is a high-quality, durable plastic piping system designed for use in potable water, heating, and cooling systems. The system consists of a range of fittings and components made from PE-Xa and PP-R materials. It is designed to be easy to install and maintain, and provides excellent resistance to corrosion and chemicals. The system has been tested and certified to meet relevant European standards and is suitable for use in domestic and commercial applications.