Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 230-155 found under Valve Safety Relief by Mcc Powers Process Controls. The National Stock Number assigned to this part is 4820014866321, 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 230-155.