Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2U219833272 found under Cagevalve by Proconex Inc. The National Stock Number assigned to this part is 4820016895543, 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 2U219833272.