Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 60964 PART 50893 found under Plug Rotary Valve by Waterous Company. The National Stock Number assigned to this part is 4820010901909, 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 60964 PART 50893.