Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R27241-100 found under Regulator Air Pressure Relief by Ingersoll Rand Inc. The National Stock Number assigned to this part is 4820013075130, 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 R27241-100.