Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 391218ITEM2 found under Cage Valve by A C I Controls Inc. The National Stock Number assigned to this part is 4820015417289, 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 391218ITEM2.