Classification of pressure relief valves under Heading 8481 upheld over parts of diesel engine heading 8409

Pressure relief valves imported for a common rail fuel injection system were classifiable under Heading 8481 as safety or relief valves because they were complete valves in themselves, designed to relieve excess pressure by spring actuation. Heading 8481 continues to apply even where such valves are specialised for a particular machine or vehicle, and Section Note 2 to Section XVI requires goods covered by a specific heading to be classified there rather than as machine parts. They could not be shifted to Heading 8409 merely because they were used in a diesel engine system, so classification under Heading 8481 was upheld.

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Issues: Whether pressure relief valves imported for use in a common rail fuel injection system were classifiable under Heading 8481 as safety or relief valves, or under Heading 8409 as parts of diesel engines for motor vehicles.

Analysis: Heading 8481 covers taps, cocks, valves and similar appliances used on or in pipes, tanks and similar structures to regulate the flow or pressure of fluids, and the HSN Explanatory Notes state that such valves remain in that heading even if specialized for a particular machine or vehicle. The imported goods were complete valves in themselves, not mere machinery parts incorporating a valve, and their function was to relieve excess pressure in the common rail by spring actuation. Section Note 2 to Section XVI requires articles which are themselves covered by a specific heading to be classified in that heading rather than as parts of a machine. The exclusion relied on for Heading 8409 applied only when the goods could not be classified under a specific heading and were merely parts suitable for use with engines of Heading 8407 or 8408. Since the goods were complete safety or relief valves covered by Heading 8481, they could not be shifted to Heading 8409 merely because they were used in a diesel engine system.

Conclusion: The pressure relief valves were correctly classifiable under Heading 8481 and not under Heading 8409, so the contrary classification could not be sustained.

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