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Find answers to your questions

We have gathered the questions we hear from customers frequently. And in the below, we will give our answers.

Please do not hesitate to contact us, if you have any additional questions.

Lamella Pump

The rotor is suspended eccentrically in the pump house. Two lamellas are placed in the rotor which creates four large pumping chambers. The lamellas are guided by the cam discs in the pump housing, thereby causing a displacement of the product.

Read more about the original Lamella Pump here.


The unique construction of the JS lamella pump enables it to pump large and hard particles such as bones, tissues, and fat.

This makes it the exceptionally great for pumping raw material like animal by-product and industrial fish in the rendering industry. The pump can also handle cooked products before the liquids are separated.

Read more about the original Lamella Pump here.


JS Lamella Pump replaces other systems such as screw conveyors, progressive cavity pumps, pressure tanks and conveyor belts.

The JS Lamella Pump does not require any manned operation, which reduces the risk of injuries.  

Read more about other JS products here.



Rendering is a process that converts waste / by-products from fish, pork, cattle, and poultry processing industries into stable, usable materials.

Materials like meat and bone meal, meat meal, poultry meal, blood meal, fish meal and animal fats and oils. These animal by-products are very useful as feed ingredients for livestock, poultry, pet food, aquaculture, and regular animal feed.

The Raw material, whether it is from pork, cow, or fish, is collected and accumulated in storage tanks.

When ready to be processed, the product is sized down through a crusher or transported directly for heating.

Traditionally this is done in a cooker which heats the product to a temperature where the bacteria are killed, and the liquids and fats are suspended from the solids.

Afterwards the product is compressed in a screw press which squeeze out the main part of water and fats. The remaining solids referred to as the press cake is then dried and milled to a flour.

The liquids are separated in decanter to get the water and oil. The oil is cleaned, and the water is used in the process again.

See which products we recommend for these processes here.

Contact us for further information.



By-products are waste from the chicken, pork, cattle, and fish processing industry. Raw materials, which are not intended for human consumption, are rendered / transformed into stable, valuable, and useful materials like oils, various kinds of meal, proteins, and minerals.

The process covers drying the material and separating the fat from the bone and protein.

Contact us for more info.

By-products are the waste / left-overs from processing of fish, pork, cattle and poultry. 


Fishmeal is a rendered by-products from the fish processing industry. The product provides essential nutrients in a highly digestible concentrated form, and is used in domestic and farm animal diets.

JS provides products and solutions for this segment. Please see the processes and which products we recommend for each process following this link.

For reference, please find a case story from FF Skagen - one of the leading manufactures of fishmeal in the world - follow this link.

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Please do not hesitate to contact us if you need guidance or counselling.
We will do our utmost to meet your needs and demands.

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