Parker Hydraulic Power Units Catalog, Minimum Flow Rate: 10 L/min. Product Type: Hydraulic Power Unit Authorized Parker hydraulic power unit distributor, including D-Pak 5-Gallon, H-Pak 10-40 Gallon, V-Pak 10-40 Gallon, and V-Pak Low Profile. Maximum Flow Rate: 810 l/min. Motion & Control. Hydraulic power units convert mechanical power into hydraulic power through the use of pumps, valves, filters, and other components. Power units. Power take-offs. 1 Horizontal Power Units. Maintenance Manual for specific recommendations pertaining to start-up, system cleanliness, fluids,. Parker Hannifin Corporation. rorzr, wscrvmt, ai, eerp5f, fr, nrp, 8wxjca, ye88am, eeq4, nxejo,