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Megapress, Megapress S: Flow optimized press connector system made of unalloyed steel 1.0308 with an external galvanic zinc nickel coating for black, galvanized, industrially painted and powder coated steel tubes. Press connector with stainless steel cutting ring to ensure the mechanical strength of the connection. Suitable for wall mounting and concealed applications of risers and storey installations. Megapress G: Flow optimized press connector system made of unalloyed steel 1.0308 with an external galvanic zinc nickel coating for black and galvanized steel tubes. Press connector with stainless steel cutting ring to ensure the mechanical strength of the connection. Suitable for wall mounting and concealed applications of risers and storey installations. Megapress Stainless 316: Press connector made of stainless steel 1.4404 (316L). Press connector with stainless steel cutting ring to ensure the mechanical strength of the connection. Suitable for wall mounting and concealed applications of risers and storey installations.