The 3-5L bottled water filling machine equipment is used for the production of pure water and mineral water in polyester bottles of 3 liters, 4 liters, 5 liters, etc. Realize bottle flushing, filling, and sealing on one machine. The design of the 3-5L bottled water filling machine is scientifically reasonable, with a beautiful appearance, complete functions, easy operation and maintenance, and a high degree of automation. Fast filling speed and stable liquid level control. Using chain entry, rinsing, bottle mouth filling, sealing, without being limited by the height of the bottle, as long as the bottle mouth, bottleneck, and cap sizes are the same, the bottle shape can be changed at will. When changing the bottle shape, all pull-out wheel guides need to be replaced at the same time.