Viega MegaPress is a carbon steel, cold press system designed for use in chilled water, hydronic heating, compressed air and fire sprinkler applications. Viega MegaPress fittings are designed for use in piping systems utilizing ASTM A53, A106, A135 and A795 SCH 10 SCH 40/STD black steel pipe. Patented Viega Smart Connect makes secure connection in less than 7 sec Minimizes system downtime by allowing for wet connection Fast and easy to use No threading, cutting oil, or heavy equipment needed Helps installers easily identify unpressed connections during pressure testing Model 4818XL https://youtu.be/XQC7UkRyQdQ