Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number LPPAN4683BI11 ITEM 7 found under Valve Check by Proconex Inc. The National Stock Number assigned to this part is 4820013757695, 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 LPPAN4683BI11 ITEM 7.