Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AAEX0314500B found under Isolator Valve Asse by The Lee Company. The National Stock Number assigned to this part is 4820012688004, 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 AAEX0314500B.