Machine parts in the nature of mechanical valves, hydraulic controls, pneumatic controls, pneumatic valve actuators, linear actuators, hydraulic valve actuators, pneumatic valves in the nature of valves being parts of machines operated pneumatically, and electro-hydraulic valve actuators, all for use in the oil and gas industry and none of the aforementioned for use with transmissions; oil and gas well drilling equipment in the nature of mechanical isolation tools for isolating zones within an oil and gas drilling riser to regulate and control the flow of drilling fluid and gas, namely, drilling rig mechanical handling machines and devices, drilling rig mechanization machines and devices, and axial flow pumps; oil and gas well drilling equipment in the nature of mechanical isolation tools for regulating and controlling the flow of drilling fluid and gas in marine risers, namely, drilling rig mechanical handling machines and devices, drilling rig mechanization machines and devices, and axial flow pumps; oil and gas well drilling equipment in the nature of riser isolation devices tools for regulating and controlling the flow of drilling fluid and gas, namely, drilling rig mechanical handling machines and devices, drilling rig mechanization machines and devices, and axial flow pumps; oil and gas equipment being machine parts in the nature of flow control manifolds; gas handling apparatus in the nature of machine tools for hydrocarbon drilling or production systems; structural parts and fittings for the aforesaid goods