valves being parts of pumps; engine valves; throttle valves [parts of motors]; hydraulic valves [parts of machines]; valves as machine components; valves [parts of machines]; valves being parts of machines; valves for motors and engines; valves for engines and motors; valve actuators, hydraulic; bicycle dynamos; valves for land vehicle engines; dynamos for bicycles; valves for land vehicle motors; valves for motors; pneumatic actuators for control valves