Viega MegaPress and ProPress 3-Piece Ball Valves are now available in a variety of applications from 2½" to 4". The new XL sizes are approved for more commercial, industrial and residential applications than any other system. Viega also is launching an entirely new line of MegaPressG valves for gas applications in sizes ½" to 2". These valves are specifically engineered to withstand abuse from harsh chemicals, oils and gases.