Product Name : Commercial Kitchen Oil Trap
Application : Restaurant

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What is a Grease Trap?
Grease traps have been in use since Victorian times, with the first patent for a modern day grease trap issued to Nathaniel Whiting in the late 1800s.
Grease traps vary in size, with smaller variations designed to connect individual sinks and larger ones installed to service larger facilities.
The definition of a grease trap is “a trap in a drain or waste pipe to prevent grease from passing into a sewer system.”
A grease trap is in simple terms a plumbing fixture that contains decomposing food waste.
What is The Purpose of a Grease Trap?
The wastes generated by large establishments such as schools, cafeterias, and restaurants is significantly more in both frequency and volume. If left unchecked, the wastes could end up accumulating in sewer pipes and create problems such as:
-Foul Odors
-Blocked drainpipes and sewers
-Restricted wastewater flow
To prevent these problems from arising it becomes necessary to install specialized devices. The device in question is called a grease interceptor or a grease trap (these terms are used interchangeably).
Health inspectors typically ensure that large establishments have grease traps installed in their premises.
How Does A Grease Interceptor Work?
In the most fundamental term, it functions by cooling warm or hot greasy water. By allowing the FOG to cool, it’s able to separate the different layers of wastes.

FOG are lighter in density and float at the surface of the tanks, and the cooled water – minus the FOG – continues draining to the sewer.
The FOG floating at the surface of the water is then trapped by the grease trap. For its use to be effective, the grease trap should be emptied when the sludge level reaches 25% of the tank level.

The larger “gravity” or “passive” traps rely more on gravity and time to separate FOG. Standpipes, internal baffling, and larger tank sizes allow the magic of gravity to work by increasing the “retention time” on these passive units. The services of a professional should often be sought at intervals.
For smaller, indoor types a hydro-mechanical grease interceptor should be used instead. The traps used in the interceptor utilize internal baffles that provide more space and time for separation by lengthening the flow path.
In order to maximize separation of FOG from effluents, the wastewater making its way inside the grease trap should be regulated by control devices that at this stage also allow mixing of air.
Grease Trap or Interceptor Sizing
Size is, needless to say, the most important thing for an establishment to consider. This is tied to the rating that hydro mechanical interceptors have in terms of the allowable maximum drainage in gallons per minute (GPM). Naturally, hydro mechanical receptors have a 100gpm handling capacity, and anything beyond this should be left to the gravity receptor.
Things that influence the grease trap/interceptor sizing are:
-Sizing as per Values of Drain Fixture Unit (DFU)
-Sizing as per the volume of total flowing fixtures
-Sizing based on waste pipe’s diameter
To this end, it becomes necessary to have a manufacturer that provides charts with GPM flow listing based on the diameter of the pipe.

Provided you know the waste pipe’s size and type of interceptor, this method becomes very simple. Similarly, using DFU values for sizing is straightforward because one only has to sum up the DFU values for the waste flowing into the grease trap.
Some basic math is required when calculating the interceptor’s size based on the flow and capacity of the actual waste.
First, you’ll need to determine the fixture’s dimensions, which will, in turn, determine the fixture’s volume in cubic inches.
Secondly, that figure would need to be converted to gallons. To better illustrate this, divide the volume aforementioned (cubic inches) by 231 to find the number of gallons of waste.
Thirdly, multiply the figure resulting from above by 75%. This is because it is very unlikely that the fixture will fill to the brim even on busy occasions.
Finally, calculate the flow/drain rate.
So how is a flow rate calculated?
You’d need to fill the fixture to 75% capacity, which is 3/4 of the total fixture. Next, time the length of period it takes for the fixture to drain completely.
Lastly, take the result you had in the third step above and divide it by the time it takes for the fixture to come out. The result you get is now the rate in GPM.
At this stage, it would be advisable to seek the guidance of a professional or a manufacturer. Also, depending on the local laws, you may need to consult the local health and hygiene department to be sure that the grease trap you have fits your needs.
Too large, and you run the risk of damaging things downstream as sulfuric acid may be created within the tank.
Too small, and the unit will not do its purpose of preventing FOG from passing through freely unless it’s periodically cleaned.
Furthermore, the Code of Uniform Plumbing that acts as a guideline in this space prescribes that unless specifically required by the jurisdiction’s authority, dishwashers are not to be attached to a grease trap.
This is because chemicals and other detergents used can emulsify the FOG rendering the trap unusable.
Again, the Code only permits garbage disposals to flow unhampered into drainage
systems. It goes without saying that it is imperative to check with the local authority before purchasing or getting down with the sizing process.
What Could Possibly Go Wrong With Grease Traps?
If the trapped FOG is not pumped out when needed, it becomes thick and may begin to escape via

Choosing the correct Oil trap and properly installing it requires an understanding of:
● The best location (inside or outside your facility)
● The right materials for your application (plastic, fiberglass, or concrete)
● The most effective type of trap for your situation (hydromechanical, gravity, or automatic grease removal unit)
● The amount of FOG likely to pass through your system
● The flow rate, measured in gallons per minute, of all sinks draining into the trap
● Local plumbing codes
Maintenance & Required Services:
Grease traps are not “set it and forget it” plumbing fixtures. They require ongoing maintenance and regular cleaning.
BBB Plumbing Inc. has been installed more than 100 of oil traps in Calgary city and greater area for more than 10 years. Contact us today at (587) 433-3335 or here for more information or to request a bid.
We offer a one-year warranty on all parts and labor excluding washers.





Steps
1. Cutting the concrete floor
2. Excavating the soil.
3. Building concrete box with manhole
4. Installing Oil Trap
5. Performing all plumbing and venting ABS pipe
6. Get inspection approved by city inspector
7. Finishing concrete work
8. Service and maintaining over the years.















BBB Furnace services is not limited just for Commercial Oil trap , we are serving following services to Calgary and greater area.
● Plumbing
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● Licensed plumber
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● Emergency plumbing service
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● Repiping
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● 24-hour plumbing service
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● Satisfaction guaranteed
● 24/7 Emergency Service
● Certified Plumbers
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● Leak Detection/Repair
● Sewer Services.