Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number U843H8Q1TL3 found under Valve Regulating Fl by Leslie Controls Inc. The National Stock Number assigned to this part is 4820016037881, 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 U843H8Q1TL3.