Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2280-400 found under Seat Valve by Huntington Ingalls Incorporated. The National Stock Number assigned to this part is 4810011883596, and the Federal Supply Class is 4810 Valves Powered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 2280-400.