Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number DC 2000 2 found under Valve Check by Parker Hannifin Ltd. The National Stock Number assigned to this part is 4820010683780, 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 DC 2000 2.