Manual Grease Traps
Manual Grease traps work by slowing the flow of waste water, this allows it to cool and separate into layers with the FOGS (Fats, Oils & Grease) sitting on top and water at the bottom. The outlet is designed to only allow the liquids at the bottom to then be released into the drainage system.
It is important to fit a grease trap that is large enough for the flow of waste water going through it, if you install a trap that is too small then the flow of water entering will push some of the FOGs out into the drain dramatically reducing the effectiveness of the trap.
Manual grease traps are sold based on the flow of waste water they are capable of separating measured in litres per minute and not the holding capacity of the tank its self, for example a 110L grease trap is capable of separating the waste water flowing into it at rate of 110L per minute.
You can work out your flow rate using the following equation:
Sink:
- Multiply the LxDxH of your bowl in Inches to give you the cubic Inches of the bowl
- Divide this number by 231 to give you the gallons per min flow rate
- Times this number by 0.75 to take into account displacement
- Multiply your answer by 4.546 to convert to litres
E.G.
When calculating for multiple sinks, follow the above calculation for each of the bowls and take 100% of the first bowl, 50% of the second bowl 25% for any subsequent bowls.
E.G.
3 Bowls all at 20x16x10”
We offer 4 different sizes of manual grease traps:
- 5KG – 16L Flow Rate – Size: 38x275x230mm (WxDxH)
- 9kg – 36L Flow Rate - 385x385x290mm (WxDxH)
- 18KG – 60L Flow Rate – 655x455x330mm (WxDxH)
- 26KG – 110L Flow Rate – 800x500x370mm WxDxH)
All our manual grease traps have the following features:
- Fully Stainless Steel
- Internal solids filter basket on inlet
- Draw off valve for emptying
- 50mm inlet and outlet
- Designed to conform with BS EN 1825-1:2004