Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number E 40 5334 found under Valve Butterfly by Pentair Valves And Controls. The National Stock Number assigned to this part is 4820145441342, 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 E 40 5334.