Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2933 X1 3309 found under Blow Down Ring by Emerson Process Management Ltd. The National Stock Number assigned to this part is 4820013032067, and the Federal Supply Class is 4820 Valves Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 2933 X1 3309.