Viega MegaPress® is a carbon steel, cold press system designed for use in compressed air, fuel gas, and heating oil applications. Viega MegaPress® fittings are designed for use in piping systems utilizing ASTM A53, A106, A135 and A795 SCH 5 to SCH 40/STD carbon steel pipe. Viega MegaPress® fittings for fuel gas or fuel oil systems shall be used with ASTM A53 SCH 40/STD carbon steel pipe. MegaPress® is CSA LC4 approved for fuel oil and fuel gas installations.