The Fortitude Pro Series comes with a manual backwashing valve.
The valve can be used in one of two ways: as a standard in/out cap or as a backwashing valve to backwash the tank.
To use it as a standard in/out cap, you will need to plug the 1” back-port connection.
To use it as a backwashing valve, you will need to install a ½” drain line to the back-port.
*We do not supply a drain line or additional fittings for this feature.