Valves being parts of machines; pumps and parts thereof, all included in Class 7; and machines included in Class 7 incorporating valves and pumps

Joints, union pieces and couplings, all for pipes and for tubes; valves and parts of all such goods; pipes, tubes and nozzles; all included in Class 17 and made of rubber, of synthetic rubber or of plastics; non-metallic hose pipes

Metallic pipes and metallic tubes, none being boiler tubes or parts of machines; joints, union pieces, couplings and parts included in Class 6, all made of common metal and for pipes and tubes; clips, pipe nozzles and valves and parts of valves, all made of common metal, and all encluded in Class 6