The GE Merlin Aquatec Booster Pump (Smart Pump) boosts line pressure up to 60 psi prior to the GE Merlin Reverse Osmosis System This booster pump is recommended for installations where the line pressure is below 60 psi. If your line pressure is below 45 psi, this pump MUST BE USED FOR YOUR SYSTEM TO FUNCTION PROPERLY. The GE Merlin Booster Pumpﾠwill improve ﾠboth flow from the system and increase the quality of the water produced by the GE Merlin System.