Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number T480 1 1 2IN found under Valve Check by Nibco Inc. The National Stock Number assigned to this part is 4820011707046, 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 T480 1 1 2IN.