This Tariff Concession Order declares that axial-flow valves with a bore diameter of at least 140 mm (classified at tariff heading 8481.80.90) are subject to item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995, effective 16 July 2010. It was made under s.269P of the Customs Act 1901 and remains until revoked under ss.269SC or 269SD.
Mechanically, importers of those valves may access the Schedule 4 tariff treatment (affecting duty payable); they must ensure the product matches the physical and tariff description to qualify.