Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 05-2320-2283 found under Valve Assembly Cont by Wheeler Bros Inc. The National Stock Number assigned to this part is 4820011134573, 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 05-2320-2283.