Motor-driven centrifugal gas boosters; gas systems for pumping low pressure natural gas, manufactured gas, or other gas mixtures up to higher pressures to meet the requirements of combustion equipment, comprising a motor-driven centrifugal gas booster, inlet and outlet valves, an electric panel with sequence control components and motor starter, butterfly valves, a heat exchanger, low pressure switches, a rotary actuator, a temperature controller, and a flow control module; motor-driven centr...