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Back pressure valves as parts of machines; Ball valves being parts of machines; Fluid power component kit for machine control comprising pumps and valves; Parts of oilfield wellhead machines, namely, gate valves, ball valves, check valves, plug valves, globe valves, choke and manifold industrial pumps, pump and valve parts, pipe fittings and flanges; Pneumatic valve actuators; Pump control valves; Valves being parts of machines