Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FCV3500B found under Valve Calibrated Fl by Hoist Liftruck Mfg Inc. The National Stock Number assigned to this part is 4820008465051, 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 FCV3500B.