Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number VB17 found under Air Eliminator Assembly by Separation And Recovery Systems Inc. The National Stock Number assigned to this part is 4820010707592, 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 VB17.