... for larger flow rate, higher pressure requirements.AJK-B3603 DC 12V,24V2000mA/12V,1300mA/24V< 5 Second(From 0 to 300mmHg in 500CC ... mmWidely used in Vacuum packaging, beauty equipment etc.AJK-B3605 DC 12V,24V800mA/12V,550mA/24V< 9 Second(From 0 to 300mmHg in ... pump, widely used in Humidifier, medical equipment, etc.AJK-B4006 DC 12V,24V300mA/12V,250mA/24V > 30 Kpa/4.35psi > 2.0 LPM ...