Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SPD-2000 PIECE 154 found under Valve Ball by Lewis Corp. The National Stock Number assigned to this part is 4820011738210, 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 SPD-2000 PIECE 154.