Viega MegaPress CuNi and ProPress copper fittings are the first press fittings approved for use in Navy combat ships.
After years of rigorous testing, the Naval Sea Systems Command (NAVSEA) has approved the use of MegaPress CuNi mechanically attached fittings in sizes 1/2-inches to 2-inches in surface combatants for a variety of systems, including chilled water, potable water, electronic freshwater cooling, seawater cooling, washdown countermeasures, drainage and many others. ProPress copper 1/2-inch fittings were also approved for potable water and various drains.