Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 47441985 AND 47445368 found under Valve Compressor by W B Arnold Company Inc. The National Stock Number assigned to this part is 4820012592065, 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 47441985 AND 47445368.