Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ST20V2154-02 found under Valve Exhaust Control by Ilc Dover Lp. The National Stock Number assigned to this part is 4820014284396, 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 ST20V2154-02.