Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 0823020 found under Regulator Temperature And Pressu by Yale Martin Industries Inc. The National Stock Number assigned to this part is 4820016029170, 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 0823020.