Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 6IN R2030-64AA-1FM found under Valve Butterfly by Norriseal. The National Stock Number assigned to this part is 4820012129974, 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 6IN R2030-64AA-1FM.