Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 83309-46ITEM 3 PN 8538-500-148 found under Disk Valve by Velan Valve Corporation. The National Stock Number assigned to this part is 4810014205102, and the Federal Supply Class is 4810 Valves Powered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 83309-46ITEM 3 PN 8538-500-148.