Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FIG2491A1IN found under Valve Gate by William Powell Company The. The National Stock Number assigned to this part is 4820005908628, 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 FIG2491A1IN.