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Flow Controls

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Flow controls, or flow restrictors, control the amount of waste water that is going down the drain to increase the efficiency of a water filtration system. Flow controls are required for all reverse osmosis (RO) systems and must be properly sized to the RO membrane capacity, typically 3-4 parts brine to 1 part permeate.

Two common types of RO flow controls:

1. External Flow Controls: Installed on the brine water drain line by pushing the 1/4" tube firmly into the quick connectors.
2. Internal (capillary) Flow Controls: Installed inside the regular 1/4" drain tubing to restrict brine water flow by forcing it through a thin capillary tube.

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