Aquatec 8800 series 8852 water pressure boost pump (pump only), 2.6LPM 24VAC for aeroponics or 100GPD to 200GPD RO systems Aquatec 8800 series pressure pump 8852 (pump only) for aeroponics, misting, 100 to 200 GPD RO systems higher flow rate than 8851 and 6800 model smaller flow rate than 8855 model 2.6 liter per minute flow rate, setting at 80 psi, this pressure is adjustable this listing is for pump only, a transformer is required for operating this pump, a 2 amp or 3 amp 24VAC transformer is required (not included in this item)