6
Water-pipe valves of metal; Water-pipe valves of metal; Metal valves for controlling the flow of fluids in pipelines; Drain traps [valves] of metal; Radiator valves of metal [other than thermostatic]; Valve assemblies of metal [other than parts of machines]; Flap valves of metal; Regulators [valves] of metal other than parts of machines; Check valves of metal [other than parts of machines]; Manually operated metal valves
7
Pumps [machines]; Hydraulic pumps; Servo-controlled hydraulic pumps; Water pumps; Engine driven water pumps; Electric water pumps; Water pumps for use in motors and engines; Water pumps for water filtering units; Fluid pumps; Electrical pumps; Submersible electric pumps; Pump diaphragms; Diaphragm pumps for pumping liquid material; Reverse osmosis pumps; Centrifugal pumps; Heat pumps [parts of machines]; Heat exchangers [parts of machines]; Expansion tanks [parts of machines]; Water supply machines [pumps]
9
Printed circuit boards; Printed circuit boards; Smart cards [integrated circuit cards]; Encoded integrated circuit cards; Multilayer printed wiring boards; Electrical circuit boards; Printed circuit expansion boards; Controller circuit boards; Integrated circuit chips; Fuses; Integrated circuit memories; Electronic components for integrated circuit cards; Boiler control instruments; Boiler control instruments; Temperature monitors [valves] for central heating radiators; Electric control devices for heating management; Central heating programmers
11
Valves [plumbing fittings]; Heat regulating devices [valves] being parts of heating installations; Mechanisms for controlling fluid level in tanks [valves]; Control units [thermostatic valves] for heating installations; Temperature control valves [parts of central heating radiators]; Water control valves; Safety valves for water apparatus; Manually-operated plumbing valves; Thermostatic valves; Expansion tanks for central heating installations; Heat exchangers, other than parts of machines; Ventilators for heat exchangers; Heat pumps; Boiler pipes [tubes] for heating installations
20
Water control valves of plastic; Water regulating valves [plastic] for water pipes; Water-pipe valves of plastic; Drains [valves] made of plastic; Water outlets [valves of plastic] for water pipes; Water inlets [valves of plastic] for water pipes; Drains [valves] made of plastic