Hystar produces hydraulic control systems such as hydraulic pumps. Hydraulic piston pumps ranging in volumes from 8 to 100 cc/rev or 0.50 to 6.10 in/rev. Hydraulic pumps include single vane pumps with a 2500 to 3600 PSI range and single vane pumps of low noise type with a 2300 to 3600 PSI range. Pumps include gear pumps, fixed displacement vane pumps, variable displacement vane pumps, and variable piston pumps.