This Tariff Concession Order applies Schedule 4 item 50 (a tariff concession) to specific oil-and-gas well workover valves classified at 8481.80.90 (emergency disconnect package; lower riser package; surface flow tree), effective 10 June 2009 until revoked (s269P, Customs Act 1901; revocation under ss 269SC/269SD). Importers or manufacturers of these valves pay lower import duty; the Commonwealth forgoes tariff revenue and importers must correctly classify goods and claim the concession. The delegate (Wendy Knowles) administers the Order.