Industrial & Scientific

The Best Commercial Grease Traps

This post contains affiliate links. As an Amazon Associate we earn from qualifying purchases.

Our picks are based on Amazon bestseller rankings, verified customer ratings, and product availability. We update our recommendations regularly to ensure accuracy.

Commercial kitchens generate significant amounts of grease, oil, and fats (FOG) that can clog plumbing systems and harm the environment. A high-quality grease trap is essential for any food service establishment to effectively intercept and remove these substances before they enter the sewer system. Choosing the right model ensures compliance with regulations and prevents costly plumbing emergencies.

No. 1
Beseder Grease Trap Interceptor 4 GPM Plastic for Home, Cafe, Restaurant
  • HIGH QUALITY MATERIAL, THICK WALLS: Our restaurant grease traps are made of durable plastic that, unlike metal, will not weld, leak or rust. The 1/4" wall thickness makes this restaurant grease trap very durable and will provide years of protection.
  • MANAGEABLE DIMENSIONS: This grease trap for sink overall dimensions are 15.75-inch x 13.2-inch x 10.63-inch which allows you to easily fit it under your sink
  • MULTISTAGE CLEANING SYSTEM: This 4-gpm ASME-certified grease trap is suitable for effectively treating oily water like mineral oil, animal oil, vegetable oil, mixed oil, and all kinds of emulsified oil.
  • EASY INSTALLATION: The 2" thread makes it easy to connect the sink and dishwasher tubing to the side inlet of the grease trap.
  • EXTRAS: Comfortable handles, durable lid and latches and high quality rubber seal
  • ASME CERTIFIED: Our HDPE grease interceptors are engineered and manufactured in strict compliance with the ASME A112.14.3 standard (Grease Interceptors). This certification ensures that the unit meets rigorous US NATIONAL REQUIREMENTS for flow control...
No. 2
John Boos GT-8 Carbon Steel Grease Interceptor, 14.2" Long by 11.2" Tall by 10.5" Wide, 8 lbs Grease Capacity
  • This Grease trap has an 8 pound grease capacity and measures 14.2" Long by 11.2" Tall by 10.5" Wide. It measures 2" from top to pipe opening, 7.5" from pipe opening to base
  • Made from TIG welded 11 gauge (1/8 inch thick) carbon steel with a corrosion resistant coating
  • Grease Trap features a non skid cover (deck plate) with locking device and removable baffle ensure lid stays securely closed.
  • T-Vent Pipe (Flow Control Tee) is included. Both ends of the Grease Interceptor accept no-hub adapters for steel or plastic
  • This commercial Grease Trap/Grease Interceptor is certified by the Plumbing and Drainage Institute
No. 3
BEAMNOVA Commercial Grease Trap, 25lbs, Stainless Steel, Side Inlet
  • UPGRADED VERSION - Larger capacity; comes with outlet pipe, user manual & all accessories needed. The welding process is improved for a smoother welding port. Threads are added at the connect hook. Corners are rounded to prevent scratches. The cover inner...
  • EASY TO INSTALL - BEAMNOVA Grease Traps are delivered fully assembled and couldn't be easier to install. Just connect the pipe run from the sinks and dishwasher to the Grease Trap inlet. Then pipe the Grease Trap outlet directly to the drain. We recommend...
  • HIGH-QUALITY MATERIAL & WORKING EFFICIENCY - Made of heavy-duty 1.2mm thickness 201 stainless steel. Anti-rust, anti-corrosion, non-deformation long service life. Flowing speed up to 13 Gallons Per Minute (G.P.M.)
  • PRACTICAL DESIGN - Overall dimensions: 23.82" x 12" x 11.22"(L*W*H). Locking devices on both sides prevent side leakage of sewage. The faucet switch makes it easier to control the outlet of sewage. The lifting handle at the top allows easy transportation...
  • OPERATING PRINCIPLE- Grease traps work on the basic principle that FOG's (Fats, oils & grease) float on water and solid particles sink. As the inflow of wastewater from the sinks enters the grease trap, the fats, oils, and greases rise to the surface and...
No. 4
Beseder Grease Trap Interceptor 10 GPM Plastic for Cafe, Bakery, Restaurant
  • HIGH QUALITY MATERIAL, THICK WALLS: Our restaurant grease traps are made of durable plastic that, unlike metal, will not weld, leak or rust. The 1/4" wall thickness makes this restaurant grease trap very durable and will provide years of protection.
  • MANAGEABLE DIMENSIONS: This grease trap for sink overall dimensions are 15.75-inch x 13.2-inch x 10.63-inch which allows you to easily fit it under your sink
  • MULTISTAGE CLEANING SYSTEM: This 4-gpm ASME-certified grease trap is suitable for effectively treating oily water like mineral oil, animal oil, vegetable oil, mixed oil, and all kinds of emulsified oil.
  • EASY INSTALLATION: The 2" thread makes it easy to connect the sink and dishwasher tubing to the side inlet of the grease trap.
  • EXTRAS: Comfortable handles, durable lid and latches and high quality rubber seal
  • ASME CERTIFIED: Our HDPE grease interceptors are engineered and manufactured in strict compliance with the ASME A112.14.3 standard (Grease Interceptors). This certification ensures that the unit meets rigorous US national requirements for flow control...
SaleNo. 5
Wentworth Commercial Grease Trap Interceptor, 20 lb Capacity, 10 GPM
  • 10 GPM FLOW RATE & 20 LB GREASE CAPACITY – Commercial grease interceptor designed for applications requiring up to a 10 GPM flow rate, with a 20 lb grease retention capacity. Ideal for restaurant and commercial kitchen wastewater applications.
  • HEAVY-DUTY 11-GAUGE CARBON STEEL – Constructed from approximately 1/8-inch-thick carbon steel for strength and durability in demanding food-service environments.
  • POWDER-COATED CORROSION PROTECTION – Durable protective powder-coated finish helps protect the carbon steel body against corrosion and everyday wear in commercial kitchen environments.
  • DESIGNED FOR COMMERCIAL KITCHENS – Helps separate fats, oils, and grease from wastewater before they enter the drainage system. Suitable for use with prep sinks, pot sinks, and other compatible commercial food-service fixtures.
  • ACCESSIBLE FOR INSTALLATION & MAINTENANCE – Removable top cover provides convenient access for inspection and cleaning. Designed for floor installation under or near compatible commercial sinks. PDI certified.
No. 6
8 LB Carbon Steel Grease Trap Interceptor for Restaurant Under Sink Kitchen
  • Grease Trap. 8 Lb. Grease Capacity. 4 Gallons Per Minute Rate Flow.
  • PDI Certified
  • No Hub Connections. T-Vent Included.
  • Non-Skid Deck Plate. Removable Baffles.
  • 11 Gauge Carbon Steel With Corrosion Resistant Coating. PDI Certified.
No. 7
Commercial Grease Trap 8lbs Stainless Steel Interceptor | Side Inlet Heavy Duty Grease Interceptor for...
  • Efficient Separation: This grease trap uses physical flow diversion and gravity sedimentation Fats oils and grease float to the surface while solids sink to the bottom Baffle plates prevent FOG from exiting through the outlet
  • Heavy Duty Construction: Made from 304 stainless steel for exceptional rust and corrosion resistance Grease traps for restaurants under sink maintain structural integrity under heavy use Flow rate up to 13 gallons per minute
  • Practical Design: Overall dimensions 13.9" x 9.9" x 9.8" with 1.5" drain outlet Grease trap commercial features rounded corners to prevent scratches Rubber ring on cover ensures no leakage Lifting handle allows easy transport
  • Simple Setup: Ships fully assembled with outlet pipe and all accessories Connect sink and dishwasher drainage to inlet then pipe outlet directly to drain Place on flat floor for proper operation
  • This oil-water separator is designed for catering, commercial, and household kitchens. It separates grease from wastewater to prevent sewer blockages, reduce cleaning costs, and maintain a hygienic kitchen environment.
No. 8
40 LB Carbon Steel Grease Trap Interceptor for Restaurant Under Sink Kitchen | 20 GPM | PDI Certified
  • Grease Trap. 40 Lb. Grease Capacity. 20 Gallons Per Minute Rate Flow.
  • PDI Certified.
  • No Hub Connections. T-Vent Included.
  • Non-Skid Deck Plate. Removable Baffles.
  • 11 Gauge Carbon Steel With Corrosion Resistant Coating.
No. 9
Canplas 3920A02S Thermoplastic Grease Interceptor 20 Gallons per Minute, 40 lb. Grease Capacity
  • Size 20 G.P.M./ 40 Lbs
  • 2" Connection size
  • 70lb actual grease capacity
  • 23.5" x 17.5" x 16.3"
  • Tested and Certified to Standard PDI-G101
No. 10
Wadoy 8 lb Commercial Grease Trap, Stainless Steel Under-Sink Interceptor
  • 【Grease Traps】The basic function of a grease trap is to prevent fats, oils, and solids reach the drain of the kitchen and the municipal sewer system. Fats, oils, and solids can cause drain blockage causing backflow thus creating serious pollution...
  • 【Working Principle】 A grease interceptor functions by cooling warm or hot greasy water. By allowing the fat, grease and oil (FOG) to cool, a grease trap is able to separate the different layers of wastes with water.FOG are lighter in density and float...
  • 【High-Quality & Leakage prevention】This grease trap made of thickened 201 stainless steel, anti-rust, anti-corrosion, non-deformation long service life. The drainage outlet of the oil separation tank interceptor adopts a threaded interface, which is...
  • 【Easy Installation and Maintenance】 This fully assembled under sink grease trap simplifies installation by connecting sink and dishwasher lines to the inlet and routing the outlet to the drain. The 5 GPM flow rate supports continuous wastewater flow...
  • 【Commercial Grease Trap】 This commercial grease trap measures 14 x 10 x 9.8 inches with a top handle for easier movement. The compact design fits various installation spaces and is suitable for restaurants, food trucks, schools, factories, and...

Last update on 2026-08-30 / Affiliate links / Images from Amazon Product Advertising API

How to Choose the Best Commercial Grease Traps

Understanding Grease Trap Types

  • Under-Sink Grease Traps: These are compact units typically installed beneath a kitchen sink. They are suitable for smaller establishments with lower FOG output and limited space.
  • Outdoor/Above-Ground Grease Traps: Larger and more robust, these units are installed outside the building, often near the kitchen. They are designed for higher volumes of FOG and are easier to access for maintenance.
  • In-Ground Grease Traps: These are buried underground and are the largest capacity option. They are ideal for large restaurants, hotels, or food processing facilities with substantial FOG production.

Key Features to Consider

  • Capacity: Grease traps are rated by the volume of wastewater they can process. Calculate your kitchen's peak flow rate and FOG output to determine the appropriate size. Undersizing can lead to frequent clogging and system failure.
  • Material: Common materials include durable plastic (like polyethylene), fiberglass, and stainless steel. Plastic is lightweight and corrosion-resistant, fiberglass offers excellent durability, and stainless steel is robust and long-lasting, though often more expensive.
  • Flow Rate: Ensure the trap's flow rate matches or exceeds your kitchen's peak water usage to prevent backup.
  • Ease of Maintenance: Look for models with easily removable baffles, access ports, and smooth interiors to simplify cleaning and pumping.

Installation and Maintenance

Proper installation is crucial for optimal performance. Follow manufacturer guidelines carefully, ensuring the trap is level and properly connected to the drainage system. Regular maintenance, including periodic pumping by a licensed professional, is essential to prevent blockages and prolong the life of the unit. The frequency of pumping depends on the trap's size, FOG output, and local regulations.

Regulatory Compliance

Many municipalities have strict regulations regarding FOG discharge. Ensure the grease trap you select meets local health and environmental codes. Failure to comply can result in fines and operational disruptions. Check with your local authorities for specific requirements in your area.

Comparison Tips

  • Match Capacity to Volume: Prioritize models with sufficient capacity for your kitchen's daily FOG production.
  • Consider Material Durability: Choose a material that suits your budget and the expected lifespan of the unit, balancing cost with longevity.
  • Evaluate Maintenance Access: Simpler maintenance designs can save significant time and labor costs over the unit's lifetime.
  • Check for Certifications: Look for traps that are certified by relevant plumbing or environmental organizations, indicating they meet performance standards.

Frequently Asked Questions

How often should a commercial grease trap be pumped?
The frequency of pumping depends on several factors, including the size of the trap, the volume of wastewater, and the amount of grease generated. A general guideline is every 1-3 months, but it's best to consult your local regulations and a professional service provider.
What is the difference between a grease trap and a grease interceptor?
While often used interchangeably, 'grease trap' typically refers to smaller, indoor units, whereas 'grease interceptor' usually denotes larger, outdoor or in-ground units designed for higher flow rates. Both serve the same primary function of separating FOG from wastewater.
Can I install a grease trap myself?
While some smaller under-sink units might be suitable for DIY installation if you have plumbing experience, larger or outdoor units often require professional installation to ensure proper function and compliance with building codes. It's recommended to consult a qualified plumber.
What happens if I don't maintain my grease trap?
Neglecting maintenance can lead to the trap becoming overloaded, causing grease to bypass the system and potentially clog your kitchen drains and the municipal sewer lines. This can result in foul odors, backups, expensive plumbing repairs, and potential fines from local authorities.
Are there different types of grease that a trap can handle?
Grease traps are designed to capture all types of FOG, including animal fats, vegetable oils, and cooking oils. The effectiveness relies on the density difference between FOG and water, allowing FOG to float and be separated.
What are the benefits of using a properly sized grease trap?
A properly sized trap efficiently captures FOG, preventing drain blockages and sewer backups, which can be costly and disruptive. It also helps businesses comply with environmental regulations, avoiding potential fines and maintaining a cleaner, odor-free kitchen environment.