Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 0781-3772 AND AW-403 found under Valve Regulating Fl by Victor Equipment Co. The National Stock Number assigned to this part is 4820010382355, 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 0781-3772 AND AW-403.