Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D-3-442 ITIM 22 found under Seat Valve by Wagner Engineering Ltd. The National Stock Number assigned to this part is 4820200004499, 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 D-3-442 ITIM 22.