YouLian semi-automatic piston liquid filling machine is highly accurate, versatile, and extremely user friendly. This volumetric Pneumatic filler draws liquids and other low viscosity products directly from a tank or drum which eliminates the need for a product hopper. This piston filling machine can also be used as a metering pump to dispense a controlled volume if necessary. Dis-assembly and cleaning is extraordinarily easy and is usually accomplished in a matter of minutes (no tools required). The operator drops a line of flexible tubing into a drum or tank, adjusts the volume of fill to the desired setting and places an empty container under the filling nozzle. With a simple press of a foot pedal, the exact quantity of product is drawn from the drum and dispensed into the container. The machine operates one fill at a time, and stands by until the foot pedal is depressed again.