This is an automatic liquid filling machine of volumetric filling type, applicable in liquid of low viscosity. It is a straight-line system using pneumatic cylinders and other sensors with PLC control for bottle positioning and liquid filling without spillage and meeting cGMP rules. It is easy in operation, short change-over time for different containers, thus very economical for one-machine-multiple application operation. The automatic filling operation includes applications in chemical, pharmaceutical, food, cosmetic and detergent industries.