Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number DN15-G1 2 found under Disk Valve by Granzow Inc. The National Stock Number assigned to this part is 4820014131378, 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 DN15-G1 2.