Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2160-3 found under Valve Butterfly by Satair A S. The National Stock Number assigned to this part is 4820003234395, 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 2160-3.