Fish protein production equipment and high-concentration liquid fillers info@marvisco.com

Choosing a filling machine for thick liquids: weighing filler or rotor pump filler?

All guides

Short answer: for thick, high-concentration liquids, choose by how the fill must be measured and how many containers you fill. A weighing filler controls each fill by weight, which stays accurate when density or viscosity changes between batches and suits larger containers such as pails. A rotor (lobe) pump filler moves the product with a positive-displacement pump and suits thick liquids in bottles and jars on an automatic line. Start semi-automatic for small output; move to automatic with more heads as output grows.

Start with the product

Write down, before you look at machines:

Fill by weight

A load cell weighs the container while it fills and stops at the set weight. Because it measures mass directly, it is not thrown off when the product's density or viscosity shifts. It works with bottles, jars and pails.

Fill by rotor pump

A rotor (lobe) pump is a positive-displacement pump: it pushes a defined amount of product per turn, so it handles thick liquids that do not flow under gravity. Fill volume is set electronically, and head count can be increased for more output.

Semi-automatic or automatic?

Semi-automaticAutomatic
Container handlingBy handConveyor
Best forLower output, many container sizesSteady output, a line with capping, sealing, labeling
Scaling upAdd operatorsAdd heads

The rest of the line

A thick-liquid line is usually built from separate machines on one conveyor: filler → capper → induction foil sealer → labeler → date or batch coder. Choosing them together avoids bottlenecks between machines.

MARVISCO filling machines

MARVISCO filling lines are for high-viscosity liquids such as honey, sesame paste, sauces and laundry detergent — not water. Fill range, accuracy, power and speed are confirmed on the quotation.

For a quote, send: the liquid and its viscosity (or a sample description and temperature), particles if any, the container and cap, the fill volume or weight, the output you need, which other machines the line needs, and the site power supply.

FAQ

Is weight filling more accurate than pump filling for thick products?

Weight filling measures the declared quantity directly, so it stays on target when density changes. Pump fillers are accurate when the product is consistent. Test your own product.

Can one machine fill both bottles and pails?

Weighing fillers handle a wide range of containers, including pails. Confirm the range on the quotation.

Can I start semi-automatic and automate later?

Yes. Many plants start with a semi-automatic weighing filler and add an automatic filler and the rest of the line as output grows.

Do you supply water fillers?

No. MARVISCO filling machines are for thick, high-concentration liquids.

Related guides: High-viscosity filling line · Automatic weighing filling machine · Rotor pump filling machine · Semi-automatic weighing filler · Capping machines

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