VALUE VQV Series Vacuum Pump - 40 m³/hVALUE VQV Series Vacuum Pump 40 m h VQV401 This VALUE VQV401, VQV Series Vacuum Pump 40 m h is designed for generating vacuum in closed systems. The VQV series pumps use a small amount of fresh air at the end of the vacuuming cycle, which pushes out the impurities drawn during the vacuum generation, thus preventing the risk of oil contamination. With many other fantastic features, this pump provides results across a plethora of applications.