Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AV31-625-3-300PSI-425DEG found under Valve Globe by W And O Supply Inc. The National Stock Number assigned to this part is 4820012521713, 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 AV31-625-3-300PSI-425DEG.