8481.30.10.10 - Having a pressure rating under 850 kPa

This HTS classification covers check (nonreturn) valves made of copper that have a pressure rating under 850 kPa. Check valves are designed to allow fluid or gas to flow in only one direction, preventing backflow. Within the broader category of check valves of copper, this specific subcategory is distinguished by its operational pressure limit, signifying its intended use in systems that do not require high-pressure resistance.

The primary distinguishing factor for this classification is the specified pressure rating. Its sibling category, 8481.30.10.90, covers identical copper check valves, but these are rated for a pressure of 850 kPa or over. This difference in pressure handling capacity is crucial for determining the correct classification, as it reflects different engineering specifications and intended applications of the valves.

As this is a leaf node in the HTS structure, there are no further subcategories. Therefore, the classification is final at this level, with the product's material (copper) and its specific pressure rating (under 850 kPa) being the definitive criteria for inclusion. Examples of goods that would fall under this classification include copper check valves used in low-pressure plumbing, domestic water systems, or other general industrial applications where backflow prevention is needed without significant pressure demands.