Vacuum pump The automatic vacuum pumps, are perfectly adapted for to composite industry : vacuum moulding, vacuum infusion and RTMDescription motor vacuum pump 3/4 hp tank air size 35 liters with vacuum gage and digital electronic control valve and lighting show status of working and setting pressure unit in 6 types KPa, Mpa, Kgs/CM3, Bar, PSI, mmHg, inHg and inlet open-close valve in roller wheel for comfortable moving