Category: Commercial Kitchen

Grease Traps for Commercial Kitchens

Welcome to Grease Traps for Commercial Kitchens! We fabricate bespoke stainless steel grease traps for hotels, restaurants, bars and take-away venues. Our grease traps can be made to your exact specifications in our Belfast based workshop.  We are happy to supply grease traps in Northern Ireland, Southern Ireland and UK wide.

Call us on +44 7813 201 502 today for a quote.

Large Stainless Steel Grease Traps lined up ready for dispatch

grease traps Ireland

Why do you need Grease Traps in a Commercial Kitchen?

Health and Safety Legislation in Ireland, North and South, gives local authorities the power to prosecute polluters of drains and waterways.  An external passive grease trap will capture Fat, Oils and Grease (FOG) and lessen the need for specialist drain clearance / cleansing and keep your business within the law.

Large Cuboid Commercial Kitchen Stainless Steel Grease Trap

Our Stainless Steel Grease Traps can be made for On Floor, In Ground or Suspended from the Ceiling.  Capacities of 2000 litres can be manufactured to design specification in either cylindrical or cuboid shape as required. The grease trap size can be calculated to suit the individual commercial needs of the facilities and comply with the building regulations 2002 in compliance with BS 1825 2004.

grease traps for commercial kitchens

Grease trap prior to installation

Hotel Kitchens

Hotel visitors looking to save money on their trips often book a hotel that has an in-room kitchen. Many hotel rooms and suites have full kitchens that include a counter top range and a refrigerator. They feel that preparing their own meals will save them money since they will not need to pay for room service or restaurant food or it makes life for families with small children easier, as they do not need to manage their children in a busy dining room while waiting for food.

This can lead to dishes being washed in a sink that does not lead to a grease trap and possibly lead to fat berg clogs in the external drains, for which the kitchen may be blamed in the wrong.

Grease Trap Benefits Traps For Commercial Kitchens Are Worth Their Weight In Gold

Yes, when you consider what they will save you (provided you clean them regularly)!
1. Fewer clogged drains
2. Fewer nasty smells
3. Lower risk of pest infestation
4. Less chance of disruption to business by the Roads contractors having to dig up the roads to clear a blocked sewer or drain.
5. More pleasant visits from health inspectors when they come to see your kitchen.

Grease traps are not only legally required for commercial food preparation areas in many states and countries but are helpful to the commercial kitchen
manager or owner. Grease traps remove the FOG items (Fat, Oil and Grease) from the grey water after it leaves the dish washing appliances and before it reaches
the external drain.

Do Grease Traps Work?

Yes. There are plenty of videos online that will show you grease traps being installed, tested and cleaned. If you are going to watch a video of a grease trap
that has been in use, beware, the inlet side is not a pretty site. Having said that, the difference between the water coming into the grease trap and that leaving the grease trap after cleaning is striking. And of course, there is always the waste oil to be pumped out and recycled.

There are two types of grease trap: above or below ground. This video shows an above ground grease trap being cleaned. Warning, the inlet side (as with all used grease traps) looks pretty gunky! But compare that with the outlet side – total difference.

Grease Traps For Commercial Kitchens


What Is A Grease Trap?

A grease trap is a appliance that is used to collect and remove solid material and especially fat, oil and grease (FOG’s) that could enter the sewers from your kitchen. They should only have wastewater from kitchens flowing through them. No other wastewater from other drainage system sources, such as toilets, should be allowed. Removing FOGs, can reduce the number of drain blockages you might suffer and also prevent huge fatbergs in the main sewer system, bad smells, disruption in the street and possibly pest infestations. You can find out more about them here.

There are two types of grease trap: above or below ground.

How Does A Grease Trap Work?

When the waste water from your kitchen enters the trap, it flows first through a sediment basket which removes larger solid particles. The grease in the water is less dense (“lighter”) than water and doesn’t mix with it, so it floats to the top (see this diagram).

Grease traps have to be cleaned regularly to remove these FOGS, otherwise, they build-up, and can eventually overflow through the outlet and even back-up through the inlet. Special cleaning materials can be used to reduce or prevent FOG build-up in internal piping. You should check whether these are allowed in your area, before using them. Not all water authorities allow their use.


A large amount of fat, oil and grease (FOG) is produced by commercial kitchens and food establishments in the UK every day. If left untreated or not removed before joining the main sewage system, it can cause major issues with main sewers and a huge amount of disruption to businesses as it is cleared. In the UK, it is a legal requirement to install a suitable grease treatment system for effective FOG removal from wastewater from commercial hot food premises.