This Order designates specific valve parts — cones, seats, plates and retaining rings for double-acting piston diaphragm pumps (tariff 8481.90.90) — as subject to Part III, Schedule 4 item 50 of the Customs Tariff Act 1995, effective 3 March 2011. Made by a delegate under s.269P of the Customs Act 1901 and remaining until revoked under ss.269SC/269SD, it affects importers and customs officials by fixing the tariff treatment for those listed parts; importers must correctly classify goods to obtain that treatment.