Aquatec 8855 water pressure boost pump (+ 3 Amp Transformer) Highest flow rate in the 8800 series, higher than 8852, 8851, 1GPM, 130psi max Aquatec high flow pressure pump 8855, 1 GPM or 3.78LPM, 130 psi max, for aeroponics, misting, 300 GPD RO systems include a heavy duty 3 Amp transformer with Aquatec electric quick plug