Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 581626-004 OXYGEN CLEAN found under Valve Regulating Oxygen System P by Pacific Consolidated Industries. The National Stock Number assigned to this part is 4820015792355, 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 581626-004 OXYGEN CLEAN.