This Tariff Concession Order (TCO 1132973) declares that stainless‑steel pump housings classified at tariff heading 8413.91.90 are to be treated under item 50 of Part III of Schedule 4 to the Customs Tariff Act 1995 from 27 September 2011 until revoked (made under s.269P; revocation ss.269SC–269SD). Mechanically, it changes the tariff treatment applied at import for those specific pump parts, affecting import costs and procurement incentives; the Order was issued by a delegate of the Chief Executive Officer.