Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AC70000NW025 found under Valve Regulating Fluid Pressure by Welch Vacuum Technology Inc. The National Stock Number assigned to this part is 4820014252842, 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 AC70000NW025.