8481.30.10 - Of copper

This HTS subcategory, 8481.30.10, specifically classifies check (nonreturn) valves that are constructed primarily from copper. These valves are designed to allow fluid or gas to flow in only one direction, preventing backflow. They are essential components in various piping systems, boilers, tanks, and vats, ensuring the integrity of fluid control and preventing potential damage from reversed flow.

Distinguishing 8481.30.10 from its siblings, 8481.30.20 and 8481.30.90.00, is crucial. While all fall under the broader category of check valves, this specific heading is exclusively for those manufactured from copper. Sibling 8481.30.20 pertains to check valves made from iron or steel, and the residual category 8481.30.90.00 covers check valves made from any other materials. Therefore, the material composition is the primary differentiator.

Further refinement within this copper check valve classification is achieved through its subcategories, 8481.30.10.10 and 8481.30.10.90. These subcategories differentiate based on the operational pressure rating of the valve. 8481.30.10.10 covers valves with a pressure rating below 850 kPa, while 8481.30.10.90 encompasses those with a pressure rating of 850 kPa or greater. This distinction is important for applications requiring specific pressure handling capabilities.