The PE fitings are mainly used for irrigation and for water pipes. The PE fittings are made of PP polypropylene.
T-piece for PE-pipe
Up to a size of 63 mm can all PE fittings, if not otherwise stated used for drinking water supply.
The terminal joints of PE compression fittings can be used for PE pipes, as all other materials PVC, metal, etc. are too hard, and slip out again.
When using compression fittings PE pipe will be jammed, but the PE fittings can be dismantled at a later time.
The threaded fittings of PE can be screwed to the other threads of the plastic fitting.