Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 9314C03-2180 found under Valve Check by The Entwistle Company. The National Stock Number assigned to this part is 4820014496737, 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 9314C03-2180.