Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CKFA1875005A found under Valve Check by The Lee Company. The National Stock Number assigned to this part is 4820014354850, 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 CKFA1875005A.