Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 0437702 found under Valve Bkflw Pr by Ferguson Enterprises Inc. The National Stock Number assigned to this part is 4820016047625, 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 0437702.