Polypropylene clamp connections are particularly suitable for connecting PE pipes (PE-LD, PE-HD, PE40, PE80 PE100) with an outside in diameter between 16 mm and 110 mm. The pipe and the connection are simply pressed against each other and screwed together. They can be loosened and reassembled several times without damage. Therfore, the field of application of such pipes ranges from heating, solar thechnology, rainwater ulilisation systems to gas, liquid gas and heating oil installations. The operating pressure is 10 bar or 16 bar.