Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number G04DN40RK44S found under Valve Check by Noske Kaeser Gmbh. The National Stock Number assigned to this part is 4820121948571, 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 G04DN40RK44S.