Pumps (parts of machines, engines and motors); vacuum pumps [machines]; oil-sealed vacuum pumps; compressed air machines; compressors; air compressors; reciprocating compressors; air blowing machines; air compression machines; oil-injected compressed air machines; regulators (parts of machines); cylinder heads for engines; valves [parts of machines]; vacuum control valves [parts of machines]; pressure pumps; compressors for gases; hydraulic pumps; clack valves [parts of machines]; hydraulic v...