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automatic valves; automated valves for controlling fluid flow; valve automation equipment comprising electronic controls; control valves for regulating the flow of gases and liquids; electric valve actuators; electronic valves for controlling gas or fluids; pressure indicating plugs for valves; pressure relief valves for air or liquid; safety valves for flow shutoff in well construction; solenoid valves; electromagnetic switches; thermally activated manually resettable fire safety valves; process controls; valve automation products, namely, pneumatic rack and pinion actuators and electric rotary actuators; gauges, namely, pressure gauges; pressure sensors; pressure controls; automatic liquid level control machines and instruments; liquid level sensors; level indicators; level gauges; automatic liquid level control machines and instruments; temperature sensors; temperature controls; transducers, namely, pressure and ultrasonic transducers; thermocouples; sensors for determination of temperature, positions and distances; leak detectors for pumps; electrical limit switches; and valve positioners