This Order (Tariff Concession Order 0926550) declares that a specific part — non-return and pressure relief valve bodies made of copper alloy (tariff classification 8481.90.90) — is to be treated under item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995, effective 24 July 2009 (s269P). That changes the imported tariff treatment for those valve parts until revoked (ss269SC/269SD). Importers of the listed parts are directly affected because their duty liability is altered; the decision was made by a CEO delegate (Paul Mercer).