The calculation program is our newest development which is equipped with several new features. The input mask for the operation data does look like a/p diagram. Beside the piping inside the refrigeration circuit it is possible to size the down- and upstream pipes of safety relief and overflow valves and to size the valves inside oil or brine circuits. In addition to sizing of valves it is possible to calculate a whole pipe line with all its fittings inside via Drag and Drop. The valve catalogue is a part of the GEA AWP ValveCalc 4.0 software and can be selected at any time. Supplementary the CD contains 2 and 3 dimensions CAD drawings in various formats.