Below is a list of Hydraulic Hand Pump manufacturers from 25lahoma-city, Oklahoma. Hydraulic hand pumps are liquid transmission devices that harness the mechanical force produced by a manually-operated actuator. A manually-operated actuator can be a handle, a lever, a toggle or a wide variety of other utilities. Hydraulic hand pumps are used for water pumping, the distribution of hydraulic fluids and for a variety of other purposes.