Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 178-8019 found under Valve Gate by A L D Inc. The National Stock Number assigned to this part is 4820014541326, 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 178-8019.