fixed displacement vane pump: offer 2520V,3520V,3525V,4520V,4525V Bolt flange connection Eaton Vickers 2520V hydraulic vane pump description:Displacement: ... ,45,50,605,8,9,11,12,14A-SAE 4-bolt flangeMetric thread Inch thread,omitFlange mounting,omit F-Foot mounting1 ... ) L-left hand for counterclockwise; R-right hand for clockwise fixed displacement vane pump(2520V)