Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 70-3015 found under Valve Regulating Fluid Pressure by Harris J W Co Inc. The National Stock Number assigned to this part is 4820005511094, 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 70-3015.