The basic elements of the System are the specially designed CUNIPRESS® fittings in 90/10 copper-nickel in various forms and dimensions (see suply program) that allow to install distribution systems using fittings and straight pipes only. Fittings have at each end a toroidal groove with deformed by a presswing tool, provides the tightness to the coupling.
The mechanical strength is ensured by the deformation of fitting and inserted pipe. Using suitable adaptor fittings, systems realized in CUNIPRESS® can be combined also with threaded or flanged standard elements. The second element of the System are the cold drawn CUNIPRESS® pipes in 90/10 copper-nickel material sup-plied in annealed condition and in lengths of 6 meters.
In order to guarantee a perfect tightness of teh system in all service conditions, pipes have a tolerence on the outside diameter within the limits specified in ASTM B 466 M standard. The O-ring seal is made from a special elastometric material highly resistant to ageing, sea-water, hot and cold water (also when treated with the additives normally uesd for drinking water).
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