Clack valves [parts of machines]; valve actuators, hydraulic; actuators for pneumatic valves; pneumatic valve actuators; ball valves being parts of machines; pump control valves; pressure valves [parts of machines]; dosing valves [parts of machines]; pressure regulating valves being parts of machines; control valves for regulating the flow of gases and liquids; exhaust gas recirculation [EGR] valves for motors and engines; journal boxes [parts of machines]; manually operated ceramic valves be...