[richard-9]

Hi there I have a 100 gpd ro setup and would like to add another 100gpd ro. I have a flow restrictor of 550 do I need to change this for a different one if so what one thanks .

[Spruce]

Email Daqua.co.uk and ask Doug what restrictor he recommends.

Depending on the hardness of you water and whether you are on a meter or not, I would replace the restrictor with a tap so I could manually control the pure to waste ratio.

In other words, if your water hardness doesn't justify a 3 to 1 ratio, then using a restrictor at this ratio is a waste of water.  If you are on a meter then it becomes a balancing act between water costs and membrane costs.