Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number VU34F-34F found under Valve Check by Faster Inc. The National Stock Number assigned to this part is 4820015666947, 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 VU34F-34F.