9 control valves for regulating fluid flow; pressure relief valves for controlling fluid pressures in oil and gas well drilling, fracturing, stimulation, production and flow processing systems; pressure regulators for regulating fluid pressures in oil and gas well drilling, fracturing, stimulation, production and flow processing systems; electrical, hydraulic, and electro-hydraulic devices for use in the fields of oil and gas well drilling, fracturing, stimulation, production and flow processing; monitoring systems comprised of computer hardware, downloadable and recorded software, meters and sensors for monitoring oil and gas well drilling, fracturing, stimulation, production and flow processing systems and system components; downloadable and recorded computer software for the automation of oil and gas well drilling, fracturing, stimulation, production and flow processing systems and system components; telecommunications hardware and downloadable and recorded software sold as a unit for remote monitoring and data access of oil and gas well drilling, fracturing, stimulation, production and flow processing systems and system components