Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FIG NO. 719 found under Valve Gate by Walworth Co The. The National Stock Number assigned to this part is 4820002026796, 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 FIG NO. 719.