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HS Code 8481 encompasses taps, cocks, valves, and similar appliances for pipes, boilers, tanks, vats, or similar containers. The classification includes detailed subcategories for pressure-reducing valves (8481.10), valves for oleohydraulic/pneumatic transmissions (8481.20), check valves (8481.30), safety/relief valves (8481.40), other valves and appliances (8481.80), and parts (8481.90). This fluid control equipment category includes devices for regulating flow, pressure, or direction of liquids and gases. Products range from simple manual ball valves to sophisticated automated control valve systems with electronic actuation. Technical specifications focus on pressure/temperature ratings, flow characteristics, material compatibility with process fluids, and operational reliability. Applications span virtually all industrial sectors, from basic water supply to advanced chemical processing and power generation. This division represents critical components enabling the controlled movement and processing of fluids throughout industrial systems, providing the fundamental capability to start, stop, regulate, and direct flow in pipes and vessels.