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Digital Peristaltic Double-Head Filler
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Water, saline solutions, liquid flavorings, light disinfectants, and other low-viscosity products
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Approximately 1–100 mPa·s
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Approximately 1–5,000 mL per head
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Commonly ±0.5% to ±1.0%, depending on tubing, speed, and calibration
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Peristaltic pump with programmable digital control
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The product contacts only the tubing; easy product changeover; suitable for sanitary and small-batch applications; low risk of cross-contamination
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Tubing wears over time; not ideal for abrasive liquids, large particles, or very high production speeds
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Digital Piston Double-Head Filler
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Creams, gels, sauces, syrups, lotions, toothpaste-like products, and other medium-to-high-viscosity liquids
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Approximately 100–100,000 mPa·s
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Approximately 10–10,000 mL per head
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Commonly ±0.5% to ±1.0% after correct calibration
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Pneumatic or servo-driven piston with volumetric measurement
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Strong suction and discharge capability; handles viscous products well; repeatable volumetric dosing; suitable for filling containers with narrow or wide openings
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More product-contact parts require cleaning; piston seals need maintenance; may generate shear that affects sensitive products
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Digital Gear Pump Double-Head Filler
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Oils, lubricants, cosmetic oils, liquid detergents, and stable medium-viscosity products
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Approximately 10–20,000 mPa·s
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Approximately 5–5,000 mL per head
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Commonly ±0.5% to ±1.0%, depending on viscosity and pump calibration
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Servo-controlled gear pump with digital flow or pulse control
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Good repeatability; compact design; suitable for continuous metering; effective for products whose viscosity changes moderately with temperature
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Not suitable for large solid particles; abrasive products can accelerate gear wear; pressure and temperature limits must be observed
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Digital Magnetic Pump Double-Head Filler
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Low- to medium-viscosity chemicals, acids, alkalis, solvents, and corrosive liquid formulations
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Approximately 1–1,000 mPa·s
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Approximately 5–3,000 mL per head
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Commonly ±1.0% to ±2.0%, depending on liquid properties and calibration
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Magnetically coupled pump with chemically resistant wetted components
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Reduced shaft-seal leakage risk; suitable for many corrosive liquids; can be configured with compatible fluoropolymer or ceramic wetted parts
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Flow performance decreases with high viscosity; compatibility must be checked carefully; particles may damage the pump
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Digital Gravity or Time-Pressure Double-Head Filler
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Thin, free-flowing liquids such as water, beverages, detergents, and non-carbonated cleaning solutions
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Approximately 1–300 mPa·s
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Approximately 50–20,000 mL per head
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Commonly ±1.0% to ±2.0%, affected by liquid level and foaming
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Gravity feed or controlled air-pressure filling with digital timing
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Simple liquid path; easy to clean; relatively low operating cost; useful for larger containers and free-flowing products
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Less suitable for viscous liquids; filling consistency can change when liquid level, temperature, or foam behavior changes
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Digital Flowmeter Double-Head Filler
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Clean, low-viscosity liquids requiring inline measurement, including water-based products and some solvents
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Approximately 1–500 mPa·s
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Approximately 50–20,000 mL per head
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Commonly ±0.5% to ±1.0% when the flowmeter is correctly selected and calibrated
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Mass or electromagnetic flowmeter with electronically controlled valves
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Fast filling; suitable for automatic production lines; measurement is less dependent on tank level than gravity filling; supports recipe-based control
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Requires a stable, bubble-free flow; electromagnetic meters need conductive liquids; unsuitable meter selection can reduce accuracy
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Digital Servo Screw or Auger-Assisted Liquid Filler
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Thick products containing suspended particles, pulps, seeds, or small soft solids, such as sauces and food preparations
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Approximately 500–200,000 mPa·s, depending on formulation and particle content
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Approximately 20–5,000 mL per head
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Commonly ±1.0% to ±2.0%, depending on particle size and product consistency
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Servo-driven screw, progressive cavity, or specialized positive-displacement system
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Better control of difficult, thick, or particulate products; programmable speed profiles can reduce splashing and product separation
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Product formulation and particle size must be consistent; cleaning can be more complex; unsuitable for very fragile particles without careful testing
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Digital Heated Double-Head Filler
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Temperature-sensitive viscous products that become easier to pump when warmed, such as waxes, creams, pastes, and certain chocolate-based products
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Approximately 1,000–500,000 mPa·s at the selected operating temperature
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Approximately 10–5,000 mL per head
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Commonly ±0.5% to ±1.5%, depending on temperature stability
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Heated piston, gear, or progressive cavity pump with temperature control
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Reduces viscosity during filling; improves dosing consistency; helps prevent blockages in the product path
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Requires accurate temperature control; excessive heat may damage the product; warm-up and cleaning procedures take additional time
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Digital Foaming-Liquid Double-Head Filler
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Shampoos, liquid soaps, detergents, foaming cleaners, and other products that generate foam during filling
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Approximately 1–5,000 mPa·s
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Approximately 50–10,000 mL per head
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Commonly ±1.0% to ±2.0%, depending on foam control and container design
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Diving nozzle, bottom-up filling, low-shear pump, or controlled flowmeter system
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Reduces foam overflow; supports clean container presentation; programmable speed and nozzle movement can improve fill quality
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Requires product-specific testing; filling speed may be lower; nozzle height and filling sequence are important
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