Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number WVTB-NOVA DN-0200 found under Valve Butterfly by World Valve B V. The National Stock Number assigned to this part is 4820170567257, 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 WVTB-NOVA DN-0200.