Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 9310C9311-001 found under Valve Regulating Fluid Pressure by The Entwistle Company. The National Stock Number assigned to this part is 4820014509051, 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 9310C9311-001.