Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number L223 found under Poppet Pressure by Bear Hydraulics Inc. The National Stock Number assigned to this part is 4820011065669, 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 L223.