Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number UXA18767 found under Valve Check by Siemens Water Technologies Corp. The National Stock Number assigned to this part is 4820002745107, 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 UXA18767.