Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number EF17BG-273 found under Valve Regulating Fl by Carrier Corporation. The National Stock Number assigned to this part is 4820013119489, 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 EF17BG-273.