These printers use the T522220-S cartridge:
Click On a Printer to View it's Cartridges
Epson EcoTank ET 4700
Epson EcoTank ET-2400
Epson EcoTank ET 2710
Epson EcoTank ET-2800
Epson EcoTank ET-2803
Epson EcoTank ET-2840
Epson EcoTank ET-4800
Epson EcoTank ET 2720