Micro dc has brush diaphragm pump, gas and liquid, it is based on the volume pump design. Is powered by the motor rotation, by means of the eccentric wheel motor shaft, drive rubber loop, reciprocating motion, suction and discharge inside the cavity formation action, through the check valve closed, open, so as to achieve suction and discharge of gas and liquid.It can draw cold water or hot water, which can reach the water flow of 1.3-1.7l /min. 385 DC 6V-12V Mini Pump Mini Micro Water Pump Diaphragm Water Pump Vacuum Pump, Manufacturer: GENTERUN