Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1734 found under Valve Plug by Smiths Tubular Systems Laconia Inc. The National Stock Number assigned to this part is 4820009630004, 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 1734.