Single head filling machine(with weighing) adopts the weight method for measurement, through the output signal of the weighing sensor to control the opening of the feeding valve,so as to achieve automatic filling. A feeding pump is equipped at the front of the feeding port or raw material storage tank is pressurized to transport the material from the tank to the filling machine. Before filling, a filtering device can be added to remove impurities and ensure product quality; This equipment has the advantages of high filling efficiency and small filling error, and is widely used in industries such as coatings, ink, paint, asphalt, glue, lubricating oil, petrochemical, fine chemical, etc. It is not only suitable for fluids, but also for paste products.