Solenoid valves being electromagnetic switches; electric control valves for regulating the flow of gases and liquids by applying electric current; Control valves for regulating the flow of gases and liquids being structural components of oil well pumping machines; unloading check valves for the outlets of air compressors; pneumatic valve actuators being parts of machines; back pressure valves as parts of machines; valves being parts of machine pumps; thermostatic control valves for machines; butterfly valves being parts of machines; dispensing valves being machine parts; exhaust gas recirculation (EGR) valves being parts of exhaust gas treatment systems for motors and engines; valves being parts of machines; ball valves being parts of machines; proportional flow valves as parts of machines; servo-valves; pressure valves being parts of machines; hydraulic valve actuators being parts of machines; angle valves being parts of machines; automatic inlet control valves for reciprocating air compressors; hydraulic valves being parts of machines; dosing valves being parts of machines; Valves of metal, other than parts of machines; water-pipe valves of metal; manually operated metal valves, other than parts of machines; valves of metal, other than parts of machines, including those made from alloy steel and titanium