Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number KH0511 25-S704-100-50X3B found under Valve Assembly by Esi Electronic Corp. The National Stock Number assigned to this part is 4820016812699, 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 KH0511 25-S704-100-50X3B.