A liquid filling line is an automatic filling system designed specifically for low to medium viscosity liquids. This liquid filling machine handles water, juice, edible oil, beverages, detergents, and liquid soap. It fills bottles accurately without drips or bubbles. For beverage factories, oil processing plants, and liquid product manufacturers, this automatic liquid filling line improves speed, accuracy, and consistency.
- Water filling (mineral water, purified water)
- Juice and beverage filling (with or without pulp)
- Edible oil filling (soybean, sunflower, olive, palm oil)
- Detergent and liquid soap filling
- Cosmetic liquid filling (lotion, shampoo, body wash)
- Wine and liquor filling (wine, rice wine, white spirits)
YG Machinery offers liquid filling lines in modular configurations from basic single machines to full automated lines up to 3000 bottles per hour.
Suitable Liquids and Packaging for Liquid Filling Line
Liquids:
Purified water, mineral water, juice (with or without pulp), carbonated drinks, tea drinks, soy sauce, vinegar, edible oil, liquor, wine, rice wine, detergent, disinfectant, lubricant, liquid soap, shampoo, lotion, oral liquid, pesticide, and other fluids.
Packaging:
| Container type | Material | Common size range |
| Plastic bottles | PET | 40-1000ml |
| Glass bottles | Glass | 40-1000ml |
| Cans | Metal | 200-500ml |
| Composite bags | Paper-plastic | 200-1000ml |
| Stand-up pouches | Plastic | 200-1000ml |
| Buckets | Plastic | 3-5 gallons |
Liquid Filling Methods for Automatic Liquid Filling Line
The liquid filling line supports multiple filling methods to match different liquid properties:
Gravity filling – Liquid flows by its own weight. Simple and reliable. Suitable for thin liquids like water and juice.
Pressure filling – Liquid is pushed into bottles under pressure. Suitable for thicker liquids and carbonated beverages.
Vacuum filling – Vacuum draws liquid into the bottle. Suitable for foamy liquids and products sensitive to oxidation.
Pump filling – Liquid is metered by a pump. High accuracy for viscous liquids like oil and syrup.
Overflow filling – Liquid overflows to ensure consistent fill levels. Suitable for liquids with foam or variable fill levels.
Volumetric filling – Precise volume is measured and dispensed. Highest accuracy for premium products.
Modular Liquid Filling Line Configurations
A liquid filling line can be configured from basic to fully automated. Choose the level that fits your budget and production needs:
Basic single machine – Bag filling machine or direct-flow filling machine. Manual operation. Suitable for small-scale production.
Two-section unit – Filling + capping integrated machine. Semi-automatic operation.
Three-section unit – Rinsing + filling + capping all-in-one. Fully automatic, compact footprint.
Four-section line – Rinsing + filling + capping + bottle dryer. Includes drying before labeling.
Five-section line – Rinsing + filling + capping + drying + labeling. Full labeling functionality.
Six-section line – Rinsing + filling + capping + drying + labeling + laser printing. Adds batch code printing.
Seven-section line – Rinsing + filling + capping + drying + labeling + printing + shrink wrapping. Full packaging, ready for shipping.
Eight-section line – Water treatment + rinsing + filling + capping + drying + labeling + printing + shrink wrapping + conveyor system. Complete turnkey solution.
Full automatic line (top configuration) – Water treatment + bottle blowing + rinsing + filling + capping + drying + labeling + printing + shrink wrapping + full conveyor system. Everything from raw water to finished packaged bottles.
Technical Parameters of Direct-Flow Liquid Filling Machine
| Specification | Value |
| Filling volume range | 40-1000ml |
| Filling accuracy | ±1% |
| Production capacity | 0-3000 bottles/hour |
| Air pressure | 0.5-0.7 MPa |
| Air consumption | 200 L/min |
| Power supply | 380V/220V, 50Hz |
| Total power | 0.8 kW |
| Machine weight | 400kg |
| Machine size (LxWxH) | 6000 x 850 x 2600mm |
| Control system | LCD touch screen |
| Bottle types | Round, square, and irregular shapes |
The direct-flow filling machine is suitable for small to medium production. No part replacement is needed for different bottle shapes — only simple tool-less adjustments.
Core Liquid Filling Machines – Rotary and Linear Types
Rotary Three-in-One Machine (Rinsing + Filling + Capping)
This is the standard choice for large-scale production lines.
Rinsing section – Stainless steel bottle grips. No contact with bottle threads. Plum-blossom nozzles provide full internal rinsing. Rinse time ≥3 seconds, drain time ≥3 seconds. Residual water ≤3-5 drops per bottle.
Filling section – Gravity filling design. Corrosion-resistant, maintenance-free waterproof bearings. Cam-lift mechanism ensures bottle alignment with filling valves. Smooth, leak-free operation.
Capping section – Magnetic constant torque capping. Torque adjustable, no bottle cap damage. Air-rotary cap feeding. Automatic cap shortage alarm and replenishment. Airtight sealing.
Direct-Flow Linear Filling Machine – This is the universal choice for small to medium production and irregular bottle shapes.
Core advantages – Universal bottle size compatibility. No part replacement needed for different bottle shapes. Simple adjustments only. No bubbles, no drips. Stable metering. LCD touch screen. Electronic metering filling heads. Conveyor feed hopper.
Liquid Filling Line Selection Guide
| Your product type | Recommended configuration | Why |
| Mineral water, 500ml PET | 8-section line with water treatment | Complete water treatment + filling |
| Juice with pulp, 200-500ml | 5-section line, rotary filler | Rotary filler handles pulp, high accuracy |
| Edible oil, 1-5L bottles | 4-section line, pump filling | Pump filling handles viscous liquids |
| Detergent, 500ml-1L | 3-section line, volumetric filler | High accuracy for chemical products |
| Wine/liquor, 500ml glass | 4-section line with vacuum filling | Vacuum filling prevents oxidation |
| Multiple products | Direct-flow linear machine | Quick changeover, flexible |
Still not sure? Tell us your liquid type, viscosity, bottle size, and target output. We will recommend the right liquid filling line for you.
Customer Case
A beverage manufacturer in Southeast Asia was producing juice drinks in 250ml and 500ml PET bottles. Their manual filling process was slow and inconsistent. Fill volumes varied by up to 5%. Product giveaway was costing the company thousands of dollars per month.
They purchased a 5-section automatic liquid filling line with rinsing + filling + capping + drying + labeling. The system runs at 3000 bottles per hour. The direct-flow linear filler handles both bottle sizes without part changes.
Results:
- ±1% filling accuracy, product giveaway reduced by 80%
- 3000 bottles/hour, 3 times faster than manual
- No bubbles, no drips, clean bottle necks
- 5 workers replaced by 1 operator
- The line paid for itself in 10 months
The production manager said: “The liquid filling line transformed our production. We now produce consistently accurate fills at high speed. Our customers report no complaints about fill levels.”
