Two-phase flow is a flow that is composed of several combined substance that is liquid and gas. Two phase flow encountered in industrial processes, such as on a system boiler, reactor, heat exchanger, geothermal and others. Two phase flow phenomena are also a lot we encounter in nature, some examples of two-phase flow phenomena occur in nature, examples fog, snow, cloud, rain and so on. The purpose of this research was to obtain the characteristics, length, and frequency of flow patterns on two phases as well as getting the experimental values of the primary data measured on flow vacuum faction two phase mixture of glycerin and akuades air in pipes capillary with a slope of 30 ˚. The research on data retrieval using capillary pipe size is 1.6 mm with a working fluid to air a mixture of glycerine and akuades with concentrations of glycerin mixture is 40%, 50%, 60% and 70%. The value of the fraction vacuum analyzed using the method of digital image processing with MATLAB application program R2014a. The results showed that the value of the fraction vacuum is determined by superficial velocity of liquid and air superficial velocity. The greater the superficial air velocity then the value of the fraction vacuum will develop, the greater the superficial velocity of liquid fraction of the value of the vacuum would further decrease. On bubbly flow pattern and plug are strongly influenced by the viscosity of the fluid. That is because the higher the viscosity of fluid flow pattern speed then the bubbly and plug will increasingly decline, conversely, if fluid viscosity declined then the bubbly flow pattern speed and plug will progressively increase. Bubbly flow pattern length and plug are strongly influenced by the value of the homogeneous (β), if the value of the homogeneous (β) the higher then the length of the pattern will experience an increase. On the frequency of occurrence of the bubbly and plug obtained a frequency is high enough, it would result in the value of the fraction of the resulting vacuum is high enough.