Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D70610473 found under Valve Ball by Chemetron Fire Systems. The National Stock Number assigned to this part is 4820015141838, 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 D70610473.