Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1 3500 7019 31 IT4 11 found under Tappet Valve by Saacke Gmbh. The National Stock Number assigned to this part is 4820123395507, 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 IT4 11.