12v Mini Vacuum Pump 8l/min High Pressure Suction Diaphragm Pumps With Holder-Micro-pump is powered miniature DC motor drive, drive internal mechanical eccentric motion, driven by an eccentric movement inside the diaphragm reciprocates. -Whereby the pump chamber fixed volume of air compression (compression suction port is closed, the exhaust port is formed to open slightly positive pressure), stretching (compressed exhaust port is closed, a negative pressure sucking mouth open), the pumping air intakes with the outside atmospheric pressure difference, at a pressure difference, the gas pressure (suction) into the pump chamber, and discharged from the exhaust port. -Micro-pump is mainly used for medicine, gas analysis sampling, instrumentation and other fields. -Completely maintenance-free, and no oil pump, do not pollute the transmission medium. -Small, stable and reliable, hand-held instrument for pump-priming, low noise, low power consumption. Especially suitable for high negative environmental requirements. Specification: new Type: DC12V Mini Vacuum Pump Operating voltage: DC9V ~ 14V Rated voltage: DC 12V Positive pressure: 8000mmHGNegative pressure:-500mmHGRated Current: 350mA Rated Power: 20W Suction capacity: 8L / minInlet diameter:6mmOutlet diameter: 6mm Vacuum degree: 66kpa Maximum pressure: 120kpa Noise: