Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CPL-349 REV NO.3 found under Stem Fluid Valve by B E C Systems Inc. The National Stock Number assigned to this part is 4820016254627, 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 CPL-349 REV NO.3.