Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NP5029042 found under Valve Regulating Fl by Barber Greene Co. The National Stock Number assigned to this part is 4810011102529, and the Federal Supply Class is 4810 Valves Powered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like NP5029042.