Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SK-1444-11 found under Valve Assembly by National Seating Company. The National Stock Number assigned to this part is 4820014683697, 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 SK-1444-11.