Section 16 Machinery and mechanical appliances; electrical equipment; parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers and parts and accessories of such articles 84 Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof 84 81 Taps, cocks, valves and similar appliances for pipes, boiler shells... 84 81 90 Parts of valves and similar appliances of 84.81 84 81 90 00 Parts of valves and similar appliances of 84.81 Commodity Code Description 84 81 90 00 00 Parts of valves and similar appliances of 84.81