Make secure mechanical connections in less than 7 seconds with Viega ProPress for copper and stainless, and Viega MegaPress for black-iron pipe. Viega ProPress can be installed in nearly any application, ranging from potable water to corrosive chemicals, and Viega MegaPress is the only carbon-steel press fitting on the market for water and gas applications. Both systems offer Viega’s patented Smart Connect feature, which provides guaranteed detection of an unpressed connection.