PPRC Coupling / Switch 32x25 Metak - 32 mm from 32 mm to 25 mm diameter PPRC PPRC Pipes is a high quality transition fitt for combining different pipes in different pipes. This product made of polypropylene Random Copolymer (PPRC) material is resistant to high blood pressure, temperature change and chemical impact. Drinking water lines are widely used in heating systems and technical pipes. By welding, mounting and creates a solid and longevity combination between the pipes. This transitional fitting, produced by the quality of metak, provides a problem transition of pipes, which is measuring, and maintains the integrity of the system.