Tariff classification of heat exchangers turned on whether they were designed for refrigerating equipment; oxygen plant parts fell under general residuary entry.

Heat exchangers used in an oxygen making plant were not classifiable as parts of refrigerating or air-conditioning appliances under Tariff Item 29A because that entry covered only equipment designed and manufactured for such machinery. As the heat exchangers were integral components of a different industrial plant and not shown to be designed for refrigerating or air-conditioning use in the sense required by the tariff, they fell under Tariff Item 68. The classification adopted by the adjudicating authority was sustained and the Revenue's contention under Tariff Item 29A was rejected.

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Issues: Whether heat exchangers manufactured for use in an oxygen making plant were classifiable under Tariff Item 29A as parts of refrigerating and air-conditioning appliances and machinery, or under Tariff Item 68.

Analysis: Tariff Advice No. 4/70 stated that heat exchangers would fall under Tariff Item 29A(3) only if they were designed and manufactured for use in refrigerating and air-conditioning appliances and machinery. The tariff entry itself covered conventional refrigerating and air-conditioning appliances and their parts, and not components of an oxygen plant or air liquefaction plant. The heat exchangers in question were integral parts of the oxygen making plant and were not shown to be designed for refrigerating or air-conditioning machinery in the sense contemplated by the entry.

Conclusion: The correct classification was under Tariff Item 68, and the Revenue's plea for classification under Tariff Item 29A was rejected.

Final Conclusion: The appeal failed and the classification adopted by the adjudicating authority was sustained.

Ratio Decidendi: A component qualifies under a specific tariff entry for parts only when it is designed and manufactured for the kind of machinery expressly covered by that entry; an integral component of a different industrial plant cannot be brought within the entry by isolated reference to one functional aspect.

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