The PP compression fittings are ideally suited for mounting on the PE pipes. The compression fittings can be used in a variety of ways, for example for garden irrigation, in the agricultural and construction industry, for lawn or sports field irrigation and for all green areas. The assembly is convenient, simple and fast, as is the subsequent disassembly. As a result, extensions, new installations and repairs can be carried out cost-effectively and easily. They are also certified for potable water networks.