Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 538-1340-00-0 found under Valve Recirculating by Gw Technologies Pty Ltd. The National Stock Number assigned to this part is 4210001778418, and the Federal Supply Class is 4210 Firefighting Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 538-1340-00-0.