... hydraulic piston pump 2. Completely interchangeable with original. Sauer PV of PV20,PV21,PV22,PV23,PV24 hydraulic axial variable displacement ... machinery etc.4. The hydrostatic hydraulic transmission drive in close system, consisting of SAUER PV20/21/22/23/24 serie ... photos bought by our manufacturer and importer Pakistan: Sauer PV of PV20,PV21,PV22,PV23,PV24 hydraulic axial variable displacement ...