HS 84 Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof
HS 8415 Air conditioning machines, comprising a motor-driven fan and elements for changing the temperature and humidity, including those machines in which the humidity cannot be separately regulated; parts thereof:
HS 8481 Taps, cocks, valves and similar appliances, for pipes, boiler shells, tanks, vats or the like, including pressure-reducing valves and thermostatically controlled valves; parts thereof:
HS 8481.30 Check (nonreturn) valves:
HS 8481.30.10 Of copper
HS 8481.40 Safety or relief valves
HS 8481.80 Other appliances:
HS 8481.80.30 Hand operated: Of iron or steel
HS 8481.80.50 Hand operated: Of other materials
HS 8481.80.90 Other
HS 8481.90 Parts:
HS 8481.90.30 Of hand operated and check appliances: Of iron or steel