At their new production and development location constructed in 2012 in Betzdorf / Sieg, EVERTZ HYDROTECHNIK develops and manufactures innovative valve technology and complete systems with the focus on descaling and roll cooling. In view of the constantly advancing globalization and related, ever-growing and intensifying competitive pressure, there is a definite trend towards increasingly more sturdy and energy-optimized systems. Under this aspect, there have been numerous product improvements and diverse new developments with great success at EVERTZ in recent years.

Developments in the sector of selective descaling should be mentioned here in particular as the advantages are obvious and plain to see at all times. Along with the great potential of reduced energy costs, this system offers the highest possible degree of flexibility in product mix as well as a minimum of maintenance costs for the user. Whilst standard descaling systems always descale across the complete strip width or are designed – as in the case of more modern systems – for a maximum of two strip widths, ESD (Evertz Selective Descaling) creates new possibilities with its complete individuality. In conjunction with the control computer, in this case only the strip width that is really required for descaling is started up. The sheer figures underline the potential of this technology. With an ESD designed for 2 m strip width, it was possible to save around 320 kW of power on each ESD with a strip width of 1.5 m. Five of the systems described have now been in service in a European rolling mill for a large number of years with great success. Selective use of pressurized water together with the minimized wear behaviour of the complete system underline impressively the necessity for such systems in the future.