This Order treats specified steam-valve parts (discs, stems, eyes, bonnets, bodies) classified at tariff heading 8481.90.90 as falling under item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995, from 3 September 2008 until revoked. It changes the customs duty treatment for importers and manufacturers of those parts. The declaration was made by a delegate under s.269P and may be revoked under ss.269SC or 269SD, so import classification, documentation and claim compliance determine who benefits.