This article describes the currently operational version of the low-technology wind pump of high efficiency, as presented in [Valdes L-C, Raniriharinosy K. Low technical wind pumping of high efficiency. Renewable Energy 24 (2001) 275-301]. The pump, made entirely of wood and using roller bearings for the rotating links and a rubber membrane for water tightness, is of a more modular conception. Its manufacture is slightly more complicated, but its dimensioning has been greatly simplified, its reliability significantly improved and the use of wind energy optimised. (c) 2005 Elsevier Ltd. All rights reserved.