gas pump DA20SDC 1. max pressure 50kpa 2. max vacuum -40kpa 3. free flow 600ml/m 4. voltage DC,weight 18g. gas pumpDiaphragm Pumps for Air Technical Data Rated voltageDC5VDC12VRated current110mA60mAOperating voltage rangeDC3-5VDC6-12VFree flowing600mL/M600mL/MMax. pressure50KPa50KPaMax. vacuum–40Kpa–40KPaAmbient temperature0-40 °C0-40 °CWeight18g or 25gFeaturesOil-FreeCompact ...