The PVV and PVQ pumps guarantee constant displacement with long-life bearings, thanks to hydraulic load relief. They minimize wear with hydraulic vane relief and are notable for their low noise emission. They offer easy maintenance with replaceable rotating assemblies and good efficiency. The pressure connection position is selectable, as is the direction of rotation, with the option of a cylindrical or splined shaft end. The double version stands out for its compact design and separately adjustable pressure connections.