Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 052 0424 36 found under Insert Valve Butterfly by Portland Valve Llc. The National Stock Number assigned to this part is 4820005415574, 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 052 0424 36.