PRESMAC is a pressure management model used to assess the likely savings of various pressure reduction options (fixed-outlet, time-modulated or flow-modulated PRVs) in a selected zone. The analysis is undertaken in a relatively simple and pragmatic manner based on the general Burst and Background Estimate (BABE) techniques. The model allows the user to gauge the potential for pressure management very quickly and effectively without requiring a detailed pipe network analysis.

Although the methodology is based on a number of simplifications and assumptions, in practice, the predicted savings are generally within 10% to 20% of those actually achieved (erring on the conservative side).

With recent funding from the WRC, PresMac is in the process of being updated to be better compatible with recent versions of Windows.
See the link below to PresMac 4.4 Beta version for more information.