This Order applies a Schedule 4 tariff concession (item 50) to a narrowly described class of dezincification-resistant (DZR) brass ball valves that meet listed technical and certification requirements, effective 26 March 2010 until revoked. It changes customs duty treatment for importers and suppliers of those valves and is made by a delegate of the CEO under s269P of the Customs Act 1901. Claimants must demonstrate compliance (for example watermark certification and specified BSP sizes) to rely on the concession (Table; Schedule 4 item 50; s269P).