Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1949-K500RK44 found under Parts Kit Pressure by Wheeler Bros Inc. The National Stock Number assigned to this part is 4820011313281, 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 1949-K500RK44.