Pub. L. 109-432, div. D, tit. I, subtit. A, ch. 1, sec. 1191
VALVE ASSEMBLIES (VACUUM RELIEF).
SEC. 1191. VALVE ASSEMBLIES (VACUUM RELIEF). Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: “9902.22.83Pedestal assemblies for vacuum relief valves, designed for use in aircraft (provided for in subheading 8481.40.00)FreeNo changeNo changeOn or before 12/31/2009 ”. 120 STAT. 3092