Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number F249A3PP2-5 found under Valve Check by Circor Aerospace Inc. The National Stock Number assigned to this part is 4820003586683, 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 F249A3PP2-5.