The underground grease traps have a passive design, which works by simply slowing the flow of wastewater, allowing it to cool and separate into two separate layers within the trap.
Firstly solids and food waste being heavier than water will drop to the base of the chamber. GT models all have deep vertical design that enhances the fat, oil and grease (FOG’s) separation process, offering better settlement and storage of solids and sludge at the base of the trap.
FOG’s entering the trap that have a specific gravity less than the retained water in the unit and will separate and FOG's will float to the top water level. This is known as ‘Gravity Separation’ which is a proven design that all passive grease traps work on.
The GT300 and GT500 grease trap is designed for small commercial kitchens and restaurants, as fast food/takeaway establishments that are cooking with fats and oils and using multiple sinks to clean dishes and cooking utensils, so are potentially discharging FOG's via those sinks
Location and Ventilation
For the wastewater from the facility to have a chance to cool down before entering the unit, we suggest that it is placed a minimum of 3 meters away from the final sink or discharge point and that it is connected to a vent stack. If located inside a building, then a sealed access cover will need to be used to prevent odours.
Regular checks are required for the grease trap, to check the levels of FOG's and more. Weekly inspection and a minimum 6 monthly checks/cleans are recommended, full clean and emptying, which could be more regular, dependent on the type of facility the trap is installed.
- Designed in accordance to BS EN 1825
- Vertical chamber enhances separation process
- Large access cover allows full access for maintenance
- Robust rota moulded body
- Chemical Resistant and non corrosive
- Supplied with circular lockable A15 load access cover
- Square access cover optional
- Can be installed by a single person
- Extension risers available to increase invert
- Designed and Manufactured in the UK
*The table below gives a guide to number of meals per day the GT300 and GT500 will handle.*
colleges with food
with no food
|Working Capacity (l)
|Sludge Storage (l)
|Access Cover Rating
|Approx Weight (kg)
If your query is related to an existing order please email in with your order number in the subject line. If you have a new residential enquiry please consult the online guides before calling as they may answer your question.
The delivery information page is divided into 1. Specific and 2. General delivery information below.1. Specific Delivery Information relating to product lines
- Small items dispatched daily with RM24 ~85% arriving next day
- Large items (UK made) typically 5 - 15 working days (Parcelforce/APC etc)
- 1,000 litre compact underground rainwater tank
- 250 litre Prestige large Plant Pot style planter Grey
- SAR40-TOP2 Wastewater Lifting station
- 250 litre Classic Slim Wall Water butt
- Green Roof sedum tray - pre planted option
We're a Manchester based company and ship to the UK at our standard rates. Please get in touch requesting the delivery surcharge value if you are based in the Highlands or a UK island.
We no longer support ordering from the EU and Northern Ireland through the website. We can support ad hoc orders with limited liability.
Our design and Prestige range is available in the Netherlands, Ireland, Belgium, France, Germany, through our distributors.
Stock items will be dispatched on the day of order, if ordered before 1pm.
Letters are sent 1st class.
Parcels <2kg are shipped with Royal Mail 24 Tracked with the following target delivery times.
Guaranteed delivery can be arranged by advance agreement. This agreement is back to back with the courier and we will not be liable for any delays as per our terms.
A loss/replacement can only be pursued in line with the target delivery times of the courier or once the courier accept loss.
Bulky items (and pallet deliveries) are dispatched within 2-15 working days. We will request a contact number if this has not been provided at checkout.
Some items are made to order (bespoke) and details are given on the listing for dispatch times. If for any reason we anticipate a delay on our normal dispatch time we will contact you to let you know.
Occasionally there are delays. We shall not be liable for any direct or indirect losses, costs, damages or expenses incurred by you or any other person for any delays in delivery.
Missed deliveries where attempted delivery has been made usually result in re-deliveries the following day. The customer is responsible for organising re deliveries by contacting the courier direct.
Parcels/deliveries can only be "left out" if the delivering company allows that option. Parcelforce, for example, do not allow a parcel to be "left out".
We are an environment centric business and as such we try to minimise our waste. Our packaging is usually recycled and/or recyclable and we make efficient use of packaging to minimise wastage.
Covid delivery updates between 12.3.20 and 11.1.21 21 have been archived here.