... Elevated reliability,simple installation technique,requires no special tools5)The body of the fittings,abtained by hot brass stamping,avoids the ... applications...brass press fitting coupling (union) is made of brass body,EDPM seal rings,stainless steel SUS 304 sleeve and plastic ... can be CW617N, CW602N, Hpb59-1, Hpb58-2, Hpb58-3, etc;brass body superficial treatment can be tin-plating and nickel-plating ...