Tigris K1 is a multilayer pipe system designed for potable water and heating applications. It is ideally suited for installation on commercial projects such as schools, apartment blocks and hotels. The press-fit straight coupling provides a secure and leak free connection between two 20mm pipes. The system comprises multilayer composite pipe and high quality polyphenylsulfone (PPSU) fittings with a fixed stainless steel sleeve, providing a robust and long lasting system. The patented hexagonal head shape means low insertion force is required at assembly.