7 Servo-valves; Spray paint systems comprised of pumps, pump controllers, nozzles, tubing and valves; Valves being engine parts for introducing fuel-air mixtures into the combustion chambers of internal combustion engines; Valves being parts of machines; Valves being parts of machines operated pneumatically and by air; Valves being parts of internal combustion engines, generators, alternators and dynamos machines; Valves as machine components