8481.20.00.20 - Solenoid type

This HTS classification, 8481.20.00.20, specifically covers hydraulic directional control valves that operate via a solenoid mechanism. These valves are essential components in oleohydraulic systems, regulating the direction of fluid flow to control the movement and operation of machinery. They are characterized by their ability to switch the flow path of hydraulic fluid based on electrical signals sent to the solenoid actuator, enabling automated control functions.

Distinguishing this category from its siblings, 8481.20.00.10 (Manual type) and 8481.20.00.30 (Other), is crucial for accurate classification. Manual valves rely on direct mechanical input for operation, while this solenoid-activated category is defined by its electrical actuation. The "Other" category serves as a residual for hydraulic directional control valves not fitting the manual or solenoid criteria. Therefore, the defining characteristic here is the presence and function of a solenoid as the primary means of valve actuation.

As this is a leaf node, there are no further subcategories under 8481.20.00.20. Classification within this specific code is determined by the valve's function as a directional control valve for hydraulic transmissions and its solenoid-actuated operating principle. This designation excludes other types of valves, such as pressure relief valves or flow control valves, even if they also utilize solenoids, as their primary function is not directional control.