ro unit

[brieman]

I have a float valve for my ro/di unit but what do I need to get the waste water from flowing when the storage compartment fills up?

[LoneStar]

I believe you need one of these:
http://www.aquariumwaterfilters.com/index.php?page=shop.product_details&flypage=shop.f lypage&product_id=48&category_id=22&option=com_php shop&Itemid=6

The automatic shut-off valve will regulate water flow for the RO. When the back pressure or float drops, the valve is activated and water is allowed to flow through the water filter to the storage tank or float valve. When the pressure tank or storage tank is full, the pressure in the line signals the valve to shut off water flow through the filter.

[BuckeyeHydro]

Right - you'll need an automatic shut off valve and a check valve, and a good set of instructions!

Russ