Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 702-0002 found under Valve Check by Mg Lenox Instrument Co Inc. The National Stock Number assigned to this part is 4820014896150, 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 702-0002.