Just another question about the ro. When the good water outlet is closed (or tap) the system will be under pressure from the mains. what prevents the water from continuing to go out from the waste pipe? since there is no tap there.
There is an shut off that is incorporated into the unit. When you stop using the output and the pressure in the system builds, the shut off engages and stops the incoming water.
i was worried that the water could keep going in the waste if i was doing something wrong. So if i close the ro tap on the sink and open the flush valve and leave it open it would waste water right?
It shouldnt waste water if the tap is closed, but the flush valve is open. With the tap closed, the system is pressurized and the auto shut off will have stopped the incoming water. You will need to open the tap so that the shutoff disengages. Once that happens the flush valve can be used to flush the membrane.
You would have to check the waste line to make sure that the shutoff is working. If no water is coming out of the tap or the waste line, the unit is not processing or wasting water.
I never liked having the waste plumbed into the drain pipe under the sink for the simple fact that you cant see it work. I have my unit in the basement above my utility sink with the waste line run into the sink bowl. I can see at a glance if the unit is processing water. If I happened to know that the tap was off, but I could see waste water, I would know the shutoff has failed.
icon under their name to add to their reputation. 
Linear Mode
