Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1-3500-7019 31 IT2.5 found under Gear Operator Valve by Saacke Gmbh. The National Stock Number assigned to this part is 4820123395717, 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 1-3500-7019 31 IT2.5.