Valves as machine components; 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; Valves being parts of machines operated pneumatically and by air; Back pressure valves as parts of machines; Proportional flow valves as parts of machines; Valves being engine parts for introducing fuel-air mixtures into the combustion chambers of internal combustion engines; Thermostatic control valves for machines; Emission reduction units for motors and engines, namely, EGR valves.