NEOPERL offers a line of compact flow regulators (OD sizes 1/4” to 15/16”) that is easy to insert (press-fit) and available in flow rates from 0.1 gpm to 30 gpm.

How much water goes down the roof drain you specified?

The green movement is killing water conservation. You read that right! This happens to be one of the unintended consequences of all the green codes and green ratings. It may appear strange, but when you follow the logic it makes sense.