Automatic mechanical dump valves for use on separators, treaters and other similar accumulators; Oil and gas equipment, namely, mechanical fluid level gauges, gauge valves, and reflex and transparent flat glass gauges; automatic valves for controlling the movement of gas, liquid, air or other media via trim motion, dump valves, motor valves, throttle valves, control valves, shut-off valves, back pressure valves and pressure reducing valves; automatic liquid-level control instruments, namely, instruments for maintaining and controlling liquid level or interface level in a vessel, automatic liquid-level control machines and instruments, and safety level valves for liquids; Oil and gas equipment, namely, automatic lever-operated liquid level control instruments comprised of trunnion assemblies, mechanical dump valves, float arms, float arm weights, trunnion shafts, dump valve shafts, trunnion linkage bars, dump valve linkage bars, linkage rods, float arm hubs, dump valve hubs, and retrofit kits comprising a float arm hub, a trunnion shaft, a trunnion linkage rod, a dump valve linkage bar, a dump valve shaft, or a dump valve hub, or any combination of such items; Level switches for monitoring and controlling liquids in tanks and vessels; pressure measuring apparatus, pressure controllers for controlling the pressure of liquid, semi-liquid and gaseous substances in industrial processes

Oil field equipment, namely, heater treaters for the separation of water and gas from crude oil, and separators for the purification of oil and gas; Pressure regulators for water and gas installations, namely, instruments used for regulating and maintaining a constant upstream or downstream pressure and for regulating pressures for gas and water