Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 127 1 1 2IN found under Valve Gate by Walworth Aloyco. The National Stock Number assigned to this part is 4820011788807, 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 127 1 1 2IN.