6
Valves other than parts of machines for controlling the flow of liquids, gases or steam made of metal for use in switching members and control units
7
Parts of machines, namely, valves for controlling the flow of liquids, gases or steam, made of metal and/or plastic, for use in switching members and control units; [electrically, hydraulically and] pneumatically controlled or self-regulating valves as parts of machines; valves for gas and liquid made for plant process engineering, being parts of machines; differential pressure regulator for gases, being parts of machines
9
[Electronic differential pressure regulator for gases;] electronic and automatic valves for controlling gases and liquids made for plant process engineering other than parts of machines; solenoid valves; [electrically controlled or self-regulating valves for controlling and regulating the flow of gases or liquids]
11
Valves for plumbing and heating and cooling installations
20
[Valves for controlling the flow of liquids, gases or steam, made of plastic, which are manually operated, for use in switching members and control units]
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