This document describes the features and characteristics of the PVL51 and PVL71 series pumps. They are lubricated, rotary vane vacuum pumps with an oil recirculation system, capable of achieving a final vacuum of 0.5 Torr (absolute) and 7.5 Torr (absolute) respectively. They have a nominal capacity of 26.5 ACFM and 38 ACFM. These pumps are suitable for evacuating closed systems or operating at a constant vacuum within the specified technical data and curves range.