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PESTOPACK
One Year and Life-Long Technical Support
Engineers Available to Service Overseas
Corrosive cleaning, toliet cleaner, bleach, and other chemical products
Liquid
Full Automatic
Bottles and Cans
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Product Description
liquid filling machines play an essential role in modern packaging, ensuring that every bottle or container is accurately and efficiently filled before sealing and distribution. Among the different types of filling technologies available, the gravity filling machine stands out for its simplicity, reliability, and precision.
Unlike piston or pump fillers, a gravity filling machine relies on one of the most basic forces in nature — gravity — to move liquid from the holding reservoir into the container. This makes it an ideal choice for low-to-medium viscosity liquids, delivering high precision without the complexity of heavy pumping systems.
For businesses in the food, beverage, chemical, and household product industries, a gravity filler offers a cost-effective, easy-to-maintain, and hygienic solution for liquid bottling. Whether you are filling bottles of wine, juice, soy sauce, vinegar, or detergents, this machine ensures consistent accuracy with minimal operator effort.
At PESTOPACK, we have engineered our gravity filling machines to combine traditional gravity flow principles with modern PLC controls, electronic scale feedback, and quick-change connectors. The result is a machine that not only improves accuracy but also simplifies operation, cleaning, and maintenance — all while supporting high-capacity production lines.
The working principle of a gravity filling machine is straightforward yet highly effective:
Product Reservoir – The liquid product is held in a top-mounted tank or reservoir.
Gravity Flow – Gravity naturally pushes the liquid down through the supply pipes and filling nozzles.
Filling Valve Control – When the valve is opened, liquid begins to flow into the container. The flow speed is controlled by the valve to ensure a smooth, accurate fill.
Diving Nozzle System – For foamy or splash-prone liquids, the nozzles dive into the bottom of the bottle and rise gradually during filling. This minimizes foam and ensures clean, drip-free operation.
Electronic Scale & PLC Feedback – Unlike traditional gravity fillers, modern PESTOPACK machines integrate an electronic scale with PLC feedback. This system continuously monitors filling volume and corrects errors in real-time, guaranteeing consistent precision.
Because of this working principle, gravity filling machines are most suitable for non-carbonated, free-flowing liquids. They can handle a wide range of products from thin beverages to light oils and condiments.
The simplicity of gravity filling ensures lower maintenance costs, fewer mechanical failures, and easier operation compared to piston or rotary pump fillers. For many manufacturers, especially in medium-scale bottling plants, gravity filling machines represent the perfect balance between affordability and performance.
Electronic Cup Induction & PLC Control – In-line cup induction for accurate positioning, PLC ensures stable filling.
One-Key Adjustment – Touchscreen interface, quick parameter changes.
High Precision & No Drip – ±1–3 ml accuracy depending on volume, anti-drip design.
Quick-Change Connectors – All pipes adopt fast connectors, easy disassembly.
Adjustable Filling Heads – Bottle height and spacing adjustable, suitable for different shapes.
ESG Valves – More durable and precise compared to standard valves.
Diving Filling System – Prevents foam and keeps operation clean.
Model | No. of Heads | Suitable Bottles | Capacity (BPH) | Precision | Dimensions (mm) | Power (kW) | Power Supply | Air Source | Notes |
GFM-20 | 20 | Round barrel H 80–280 mm, Ø 40–100 mm; Drums L 80–120 mm, W 40–80 mm, H 80–280 mm | 200ml ≤ 8000 | 500–1000 ml: ±3 ml; 100–500 ml: ±2 ml; ≤100 ml: ≤1 ml | 2400×1100×2200 | 1.5 | 220/380V 50/60Hz | 0.6 MPa | Customizable |
GFM-16 | 16 | Same as above | 200ml ≤ 6000 | ±2 ml | 2000×1100×2200 | 1.5 | 220/380V 50/60Hz | 0.6 MPa | — |
GFM-12 | 12 | Same as above | 200ml ≤ 5000 | ±2 ml | 2000×1100×2200 | 1 | 220/380V 50/60Hz | 0.6 MPa | — |
GFM-8 | 8 | Same as above | 200ml ≤ 3000 | ±2 ml | 1800×1100×2200 | 1 | 220/380V 50/60Hz | 0.6 MPa | — |
GFM-6 | 6 | Same as above | 200ml ≤ 2000 | ±2 ml | 1600×1100×2200 | 1 | 220/380V 50/60Hz | 0.6 MPa | Compact |
Accuracy: PLC + electronic scale feedback for real-time error correction.
Ease of Operation: Touchscreen, one-key adjustment, quick-change pipes.
Hygienic: Stainless steel SS304/316L, anti-drip, clean bottling.
Cost-Effective: Fewer moving parts, reduced maintenance.
Versatile: Suitable for plastic, glass, and shaped bottles.
Energy Efficient: Low power usage, eco-friendly operation.
Feature | Gravity Filler | Piston Filler | Pump Filler | Overflow Filler |
Best for | Low-viscosity, non-carbonated liquids | High-viscosity (sauces, creams) | Wide viscosity range | Foamy products |
Accuracy | High | Very high | High | High |
Cost | Lower | Higher | Medium | Medium |
Maintenance | Easy | More complex | Medium | Medium |
Energy | Very efficient | Higher usage | Medium | Medium |
Advanced ESG valves – superior to standard valves.
PLC + Touchscreen – easy control and real-time monitoring.
Global References – installed in 30+ countries.
Customization – from 6 to 20 heads, adaptable to your production.
Full Packaging Line Integration – can be combined with Bottle Capping Machines, Labeling Machines, and Shrink Wrapping Machines.
Winery in Europe – Installed 12-head gravity filler for wine bottling (5000 BPH).
Sauce Factory in Asia – Customized 8-head system for soy sauce and vinegar.
Detergent Plant in Africa – 16-head filler integrated with automatic capping line.
Q1: What liquids are best for gravity filling?
Free-flowing, non-carbonated liquids like water, juice, wine, vinegar, soy sauce, and detergents.
Q2: Can it handle carbonated or foamy products?
Not recommended. For foamy liquids, overflow fillers are more suitable.
Q3: What’s the filling precision?
±1 ml for ≤100 ml, ±2 ml for 100–500 ml, ±3 ml for 500–1000 ml.
Q4: Is it suitable for both glass and plastic bottles?
Yes, the adjustable head design supports both.
Q5: How many bottles per hour can it fill?
From 2000 BPH (6 heads) up to 8000 BPH (20 heads).
Q6: How easy is cleaning?
Very easy — quick-change connectors and stainless steel design make cleaning fast.
Q7: Can it integrate with other packaging equipment?
Yes, it can be connected with cappers, labelers, and shrink wrapping machines.
The PESTOPACK Gravity Filling Machine is a reliable, accurate, and cost-effective solution for bottling food, beverages, condiments, and chemical liquids. With one-key adjustment, PLC feedback, hygienic design, and customizable options, it provides manufacturers with a highly efficient system that adapts to different bottle types and production capacities.
Contact PESTOPACK today to discuss your customized gravity filling solution and receive a tailored quotation.
