Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PL E-29 ITEM 13 found under Valve Safety Relief by Footejones Illinois Gear Co Div. The National Stock Number assigned to this part is 4820013469408, 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 PL E-29 ITEM 13.