Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number V3D10055 PTV3D0055-02 ITEM 2 found under Orifice Block Valve by Vacco Industries. The National Stock Number assigned to this part is 4820011210054, 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 V3D10055 PTV3D0055-02 ITEM 2.