This 1600GPD Reverse Osmosis Unit has been converted by myself to include the ability to be ran continuously.

With a Booster Pump, Relay and Junction Box fitted - this means that instead of only being able to run intermittently, this one can be ran while attached at all times. - minus the need to turn it on and off for your flush cycle.
 
It's important for RO systems to have a flush period to prolong the life of the membranes. This unit can be ran via timer to run the on/off period or just be switched on and off manually.
 
Usually made to order so can be up to 2 weeks from purchase.