Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 334126-1042 PIECE 21 found under Disk Valve by Diamond Power International Inc. The National Stock Number assigned to this part is 4820010693672, 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 334126-1042 PIECE 21.