John H. Carter Company is a provider of process control systems. The company offers regulators, actuators, pumps, and control and automated valves. It provides asset management, process optimization and repair services. The company manages a water and wastewater division that offers preventive maintenance services. John H. Carter Company represents the manufacturers of fire and gas detection and pressure, temperature, level and flow measurement devices. The company provides products from several manufacturers, including Emerson Process Management, Detector Electronics Corporation and Murphy Industries. It manages a subsidiary, ControlWorx, which is a full-service organization that serves clients in the distribution and refining, pulp and paper, and oil and gas markets.