Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 15F 3 11 2IN 7878REV0882049627 found under Valve Gate by William E Williams Valve Corp. The National Stock Number assigned to this part is 4820004697725, 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 15F 3 11 2IN 7878REV0882049627.