Grease Separators


In businesses that produce wastewater containing fat or grease, grease separators must be installed in accordance with EN 1825 and DIN 4040-100 in order to prevent damage to sewer pipes and wastewater treatment facilities. They reduce incidents of blocked drains from kitchens, improve the performance of septic tanks, and prevent contamination of small sewage treatment plants.


The grease separator should be installed close to the source of contamination, inside or outside of the building. The underground grease separator should be located close to the building in areas where the release of strong and aggressive odours will not pose a problem and where it is possible to access the separator with the disposal hose of the disposal truck. The inlet level must be located below the frost level. The grease separator has to be opened for emptying and cleaning.


ROTO grease separators are made from environmentally friendly material (PE) and are suitable for faecal and clean water storage. They are very durable, lightweight and resistant against various chemical substances used in kitchens.


  • Produced by a European manufacturer
  • In accordance with standard BS EN 1825-1
  • Made from durable, hard polyethylene (LLDPE)
  • Long lifetime
  • 100% recyclable
  • Waterproof
  • Quick and easy installation (lightweight, no need for a crane (when placing in a pit), or panelling, no need for masons, concrete mixers, etc.)
  • Easy maintenance
  • Low operating costs
  • Competitive prices

Determining the size

Size of grease trap is determined by number of meals, the maximum possible flow of contaminated water, the type of pollution, effluent temperature and detergent use.

Size can be calculated by the formula:

NG = Qs * fd * ft * fr * fm

Qs – The amount of waste water in l/s
fd – Density of grease (if it is greater or lesser than 0.94 g/cm3)
ft – Temperature factor (if higher than 50 °C, increased)
fr – Detergents factor
fm – Increased grease factor


Like many companies, you want to create a product that has your own style and branding. At Roto, we are happy to help develop this with you and include your branding into the product.

UK Contact

Daniel Smithers
Phone: +44 (0) 7880 603010
Skype: danny.smithers1


Roto Group
Puconci 12, Puconci
9201 Puconci

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