Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MV50 42 3 CMPL KIT found under Repair Kit Valve by Richards Industries Value Group. The National Stock Number assigned to this part is 4820016676775, 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 MV50 42 3 CMPL KIT.