Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B11 0054B 13MS DWG88430 20 found under Valve Gate by Velan Valve Corporation. The National Stock Number assigned to this part is 4820010869385, 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 B11 0054B 13MS DWG88430 20.