Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 11515 found under Valve Fire Extinguisher by General Fire Extinguisher Corp. The National Stock Number assigned to this part is 4210001103772, and the Federal Supply Class is 4210 Firefighting Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 11515.