Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FL62S found under Valve Vacuum Regulating by Veeco Instruments Inc. The National Stock Number assigned to this part is 4820008895643, 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 FL62S.