Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number DESCRIPTION 27-45 found under Valve Expansion by Hussmann Refrigerator Co. The National Stock Number assigned to this part is 4820014464877, 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 DESCRIPTION 27-45.