Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 29509 found under Sleeve Directional Control Linea by E Systems Inc. The National Stock Number assigned to this part is 4820016548849, 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 29509.