Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PLVM16800 found under Repair Kit Valve by F S Welsford Company. The National Stock Number assigned to this part is 4820016692435, 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 PLVM16800.