Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number GRE11 2Z found under Valve Expansion by Sporlan Valve Co. The National Stock Number assigned to this part is 4820012174808, 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 GRE11 2Z.