8481.80.50 - Of other materials

This HTS category, 8481.80.50 "Of other materials," encompasses taps, cocks, valves, and similar appliances not primarily constructed from copper or iron or steel. These devices are integral for controlling the flow of liquids or gases within various systems, including pipes, tanks, boilers, and vats. The classification here is determined by the material composition when it falls outside the explicitly defined categories for metallic valves.

Distinguished from its siblings, 8481.80.10 (Of copper) and 8481.80.30 (Of iron or steel), this heading applies to appliances where the principal construction material is not copper or iron/steel. This might include valves made predominantly of plastics, ceramics, or composite materials, provided they serve the described functional purpose within fluid or gas control systems. The key differentiator is the absence of copper or ferrous metals as the primary constituent.

Within this "Other materials" grouping, further subdivisions exist to refine classification based on specific product types. These include 8481.80.50.40 for pressure spray can valves, often characterized by specific actuation mechanisms. Additionally, 8481.80.50.60 covers a common group of domestic plumbing fixtures such as bath, shower, sink, and lavatory faucets. Finally, 8481.80.50.90 acts as a residual category for any other valves and appliances of "other materials" not specifically enumerated in the preceding subcategories.