Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 30154B8 found under Spindle Valve by Rtc Parts Inc. The National Stock Number assigned to this part is 4820008552371, 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 30154B8.