Electric sensors; Control valves for regulating the flow of gases and liquids; Electronic valves for controlling gas or fluids; Pressure switches and sensors for monitoring, controlling, and switching hydraulic or pneumatic systems; Flow switches for monitoring and controlling the flow of gases or liquids; Electromechanical controls for use in oil and gas drilling machinery and equipment; Electric control devices for use in oil and gas drilling machinery and equipment; Pressure control equipm...

Centrifugal pumps; petroleum industry power-operated equipment for drilling fluid processing and solids control, namely, shakers; power operated pressure control equipment for use in drilling oil, namely, chokes and degassers for extracting gas from fluid during oil production and dual mud gas separators for horizontal drilling being components of manifolds