Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number YB2316D291 AND 32016N found under Valve Regulating Fl by Leslie Controls Inc. The National Stock Number assigned to this part is 4820014331282, 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 YB2316D291 AND 32016N.