All our hydrophores are equipped with a steel pressure vessel, which has a neoprene bellows on the inside, so it is suitable for use with drinking water. The pressurized water sets are equipped with a self-priming pump and are equipped with a professional pressure switch with pressure gauge. Equipped with stainless steel flange. Voltage12 Volt Content - volume 20 l Yield 17 l Pressure 3.5 bar Dimensions (lxwxh) 60 x 26 x 37 cm