How do you pressurize a reverse osmosis tank?
How to Re-Pressurize Your Tank Turn off the feed water supply to the RO. Drain the old tank completely thru the spigot. Close the tank’s Ball Valve. Disconnect the YELLOW line from the tank valve. Locate the pressure valve under the blue cap on the tank. Use an Air Pressure gauge to check the current Air Pressure. Aug 1, 2011