Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number Y343H found under Valve Globe by Circor Intl Inc. The National Stock Number assigned to this part is 4820008135838, 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 Y343H.