Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number VS001800AV found under Flapper Valve by Campbell Hausfeld Co. The National Stock Number assigned to this part is 4820012058374, 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 VS001800AV.