Oilwell or gas well drilling and operating tools and equipment, namely, hydraulically actuated drilling and snubbing choke valves and hydraulic valve actuators as parts of drilling machines used in drilling; oil and gas well drilling equipment, namely, remotely controlled choke valves as parts of machines used in drilling operations; control valves as parts of machines for regulating the flow of gases and liquids for use in the oil and gas industry; control valves and linear actuators with hydraulic or pneumatic operation as parts of machines for regulating the flow of gases and liquids for use in the oil and gas industry; parts of oil and/or gas wellhead machines, namely, gate valves, plug valves, cement valves, mud valves, check valves, frac valves, wire-cutting valves, subsea production valves, surface safety valves and valve bodies, bonnet seal rings, valve bonnet yokes being spacers between the bonnet and the operator or actuator, valve bonnets being covers on valve bodies, bumper plug valves, bushings, couplings, cross fittings being high pressure manifold full flow cross fittings, pipe elbows, pipe expansion joints, pipe expansion sleeves, flanges, levers, links being connecting links, nipples, packing nuts, packing rings, fittings for reduction gears, return bends being pipe parts, seat rings being industrial metal valve seats, sprocket wheels, stuffing box studs, swing joints, swivel couplings, yoke stem bushings, and yoke plates