Under Sink Grease Trap – 40 Litre Capacity

This 40 litre under sink grease trap is a compact and dependable solution for small commercial kitchens that need efficient FOG management beneath a single sink bowl. Manufactured from durable 304 catering-grade stainless steel, the GT40 provides long-term protection for your drainage system by capturing fats, oils and grease before they cause blockages. If you require a space-saving unit that delivers reliable performance, this under sink grease trap is an excellent choice.

Browse additional options in our
commercial grease trap collection.

Key Features

• Premium 304 catering-grade stainless steel construction
• 40 litre capacity ideal for compact commercial kitchens
• Flow rate of 45 litres per minute
• 50mm inlet and outlet connections
• 9 kg grease holding capacity
• Suitable for one commercial sink bowl
• Four stainless steel lid hinges for added durability
• Compatible with standard 50mm multi-fit connectors
• Improves wastewater discharge quality
• Helps minimise drain cleaning call-out costs
• Designed and supported in the UK
• Five-year manufacturer defect warranty
• Model: GT40
• Dimensions: 380 x 380 x 285 mm (w x l x h)
• Handles up to 100 meals per day

Compact and Efficient Grease Control

This under sink grease trap has been specifically designed for kitchens where space is limited. Its stainless steel body fits neatly beneath a sink or on a nearby shelf, making installation simple even in smaller food preparation areas. The GT40 operates as a passive grease trap, meaning it is powered solely by the natural flow of wastewater—no electricity or mechanical components required.

Because the unit is gravity-fed, fats, oils and grease naturally separate as the water cools. The internal directional baffles guide wastewater through the trap, allowing FOG to rise and remain inside the chamber while cleaner water exits safely through the outlet.

Why Choose an Under Sink Grease Trap?

An under sink grease trap is a practical and cost-effective way to protect your drainage system from blockages. Smaller commercial kitchens, cafés and takeaway outlets often rely on compact grease traps to maintain compliance with local wastewater guidelines without the high cost of larger automatic recovery units.

By intercepting FOG before it reaches the plumbing system, this 40 litre unit helps prevent unpleasant odours, slow drainage and expensive emergency call-outs.

Correct Sizing for Best Performance

To ensure your under sink grease trap works effectively, choosing the right size is essential. A unit with insufficient capacity may not hold wastewater long enough for proper separation, leading to backups and reduced efficiency. The GT40 is designed to handle the flow rate of a single commercial sink bowl, allowing your drainage system to operate smoothly.

For double bowls or higher volumes, consider upgrading to our larger models such as:
GT80 or the
100 litre stainless steel trap.

Durable and Easy to Maintain

Built from long-lasting stainless steel and supported by UK-based expertise, the GT40 offers dependable performance with minimal maintenance. Two lower drain valves enable fast emptying during scheduled cleaning, while the accessible hinged lid makes routine inspections straightforward.

Fast Delivery Available

This under sink grease trap is dispatched quickly and complies with UK Building Regulations Part H (2.21). Supported by a five-year manufacturer defect warranty, it provides a reliable, cost-efficient solution for managing grease in compact commercial kitchens.