Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BH19457 found under Disk Valve by Ingersoll Rand Inc. The National Stock Number assigned to this part is 4820004034676, 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 BH19457.