Works as described I have a 100 gallon/day Ro/Di system from Express Water plus a home made water saver kit with a 150 gallon/day membrane and I can keep my head open at 60 psi (filling a 32 gallon tank for an aquatic aquarium) or 65-70 psi when filling a 4 gallon storage tank. With just a 100 gpd cone, it handles about 75 psi. My incoming well is 30-40psi depending on the time of day. Before installing the booster pump, it took 3 hours to produce 1.5 gallons of water with a tds of 5 ppm even after DI. After 24 hours I have 1.5 gallons left in the tank. After installing the booster pump production increased to 3 gph with a tds of 2ppm at the inlet, tds is 100-120. If your water pressure is below 60psi I highly recommend buying this, you won't regret it.
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