Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MSA 804823 found under Disk Valve by Msa International. The National Stock Number assigned to this part is 4810016587995, and the Federal Supply Class is 4810 Valves Powered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like MSA 804823.