This series of Corrugated Tubes Heat Exchangers are specially designed for water heating by mean of water steam or hot water. The exceptional efficiency of these heaters is due to the high turbulence levels which “HARD” corrugated tubes generate in the flow. In this way, the higher turbulence produces a thermal transference increase and a fouling reduction, reducing the necessary exchange and making possible longer running times.The fully welded design makes these units lack of gaskets, so no spare parts are necessary.Material of construction is AISI 316L, with lose flanges in carbon steel optional. Every unit is manufactured with an expansion joint to avoid differential thermal expansions. Heaters could be supplied with mineral wool and stainless steel cladding insulation.V-series units are suitable to be connected either in parallel for big flow rates or in serie for special temperature profiles.Process water always runs inside the inner tubes, while the heating media will do inside the shell.