Liquid Filling Machines

Our liquid filling machines handle a broad spectrum of liquid products: water-thin liquids (water, juice, alcohol, solvents — viscosity <100 cP); medium-viscosity liquids (sauces, syrups, shampoo, lotion — 100–10,000 cP); high-viscosity products (honey, gel, cream, paste — 10,000–1,000,000 cP); and specialty liquids including carbonated beverages (counter-pressure filling), foaming liquids (anti-foam heads), corrosive chemicals (PTFE/PVDF wetted parts) and pharmaceutical liquids (aseptic filling). The correct filling principle — gravity, piston, peristaltic, gear pump or flow meter — is selected based on viscosity, product sensitivity and required accuracy.

Piston filling: most common method; piston draws liquid into cylinder then dispenses it. Accurate for thin to medium viscosity (±0.5%–±1%). Best for sauces, lotions, chemicals, juices. Peristaltic pump: rollers compress a tube to move liquid — zero product contact with pump mechanism, ideal for sterile or aggressive liquids. Accuracy ±0.5%–±2%, limited to lower viscosities. Gear pump: positive displacement using meshing gears; excellent for high-viscosity products (creams, adhesives, gels); accuracy ±0.5%–±1%. Flow meter filling: uses Coriolis or electromagnetic flow sensor for mass or volumetric measurement; best for thin, clean liquids at high speed; accuracy ±0.2%–±0.5%.

Gravity filler (thin liquids): ±1%–±2% volumetric. Piston filler (thin to medium viscosity): ±0.5%–±1% volumetric. Servo piston filler (precision applications): ±0.3%–±0.5%. Peristaltic pump filler: ±0.5%–±2% (tube wear affects accuracy). Gear pump filler (viscous): ±0.5%–±1%. Flow meter filler (thin liquids, high-speed): ±0.2%–±0.5%. Net weight filler (scale-based): ±0.1%–±0.3%. For pharmaceutical and high-value products, net-weight or servo flow meter filling with in-line checkweigher is recommended to guarantee accuracy across shifts.

Yes. For corrosive chemicals (acids, alkalis, oxidisers), we use corrosion-resistant wetted parts: PVDF, PTFE, PP, Hastelloy or titanium — selected based on the specific chemical and concentration. For flammable or explosive liquids (solvents, ethanol, acetone), ATEX Zone 1/2 (gas) or Zone 21/22 (dust) certified equipment is available with explosion-proof motors, spark-free components and earthing systems. For highly toxic liquids, fully enclosed filling with negative-pressure extraction is provided. Always provide your SDS (Safety Data Sheet) when enquiring so we can specify the correct materials and safety features.

Inline fillers are simpler, lower cost and easier to maintain. They are suitable for speeds up to 60–120 bottles/min. Best for small to medium production volumes, multiple product types (easy changeover) and limited floor space. Rotary fillers are higher speed (100–1,200 bottles/min), continuous motion machines for dedicated production lines. They are more expensive but have higher throughput and are the standard for beverage, dairy and pharmaceutical high-volume production. Choose inline for flexibility; choose rotary when throughput exceeds what inline can deliver at your target cycle time.

Manual / semi-auto piston filler (1–4 heads, 5–40 fills/min): $1,500–$8,000 USD. Automatic inline piston filler (4–8 heads, 20–80 fills/min): $10,000–$40,000 USD. Automatic inline piston filler with capper and labeller: $35,000–$100,000 USD. Rotary filling machine (10–20 heads, 100–500 bottles/min): $80,000–$300,000 USD. Aseptic or pharmaceutical-grade filling line: $150,000–$600,000 USD. Prices depend on number of fill heads, liquid type, container format, speed and integration level. Contact us with your liquid, container and target production rate for an accurate quotation.