These fittings provide excellent corrosion protection.

The fitting housing consists of CW617N brass.
The fitting has a separation ring to prevent direct galvanic contact between the aluminium of the pipe and the brass of the fitting.
This prevents electrolysis.
The fitting has O-rings made from EPDM and stainless steel press sleeves with 3 inspection holes.
To prevent assembly errors, the stainless steel press sleeves come with the size and type of press profile that allows pressing.