Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 031-047-000 found under Parts Kit Pilot Control Valve by Warren Rupp Houdaille Inc. The National Stock Number assigned to this part is 4820013377326, 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 031-047-000.