Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A2 17122 3 found under Valve Assembly Mani by Young And Cunningham America Inc. The National Stock Number assigned to this part is 4810219147384, 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 A2 17122 3.