8481.20.00.40 - Flow control type

HTS code 8481.20.00.40 specifically classifies hydraulic valves designed for oleohydraulic or pneumatic transmission systems. These valves are integral components in systems that utilize hydraulic fluid or compressed air to transmit power and control motion. Examples include directional control valves, pressure relief valves, flow control valves, and check valves, when their primary function is within an oleohydraulic or pneumatic circuit. They are engineered to manage the flow, pressure, and direction of hydraulic fluid or air to operate machinery and equipment, such as those found in industrial automation, construction equipment, and automotive systems.

This classification is distinct from its sibling category, 8481.20.00.50 "Other," which would encompass valves for oleohydraulic or pneumatic transmissions that do not fall under the specific definition of hydraulic valves or are otherwise not explicitly categorized. Therefore, if a valve is primarily designed for and operates using hydraulic fluid, it would fall under this code. If it's for pneumatic transmission and not specifically hydraulic in nature, or if it serves a general purpose in fluid control not tied to oleohydraulic or pneumatic transmissions, the "Other" category would be more appropriate.

As this HTS code represents a leaf node, there are no further subcategories. Classification at this level relies on accurately identifying the valve's intended use within an oleohydraulic or pneumatic transmission system. Key classification criteria include the medium used (hydraulic fluid or compressed air), the valve's operational function (e.g., directing flow, regulating pressure), and its integration into power transmission systems rather than general plumbing or water control.