What is a gravity grease interceptor and how does it work?

A grease interceptor is a device connected to your plumbing system, which is specifically designed to remove Fats, Oil, and Grease (FOG) from the wastewater before it can enter the sewer system. It works by slowing the flow of water to allow the FOG to float to the top where it is contained within the baffle system.

There are several types and sizes of gravity grease interceptors ranging from large 1000 to 1500-gallon in-ground units to smaller under-counter units, known as hydromechanical grease interceptors.

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1. What is a gravity grease interceptor and how does it work?
2. How often should I pump out my gravity grease interceptor?
3. What size gravity grease interceptor should I have?
4. What kinds of problems do Fats, Oil and Grease cause?
5. Isn't my business grandfathered in under the old rules?
6. My business doesn't produce grease. Do I still have to install a large grease interceptor?
7. Will a garbage disposal affect a grease interceptor?
8. My restaurant doesn't have space to install an exterior in-ground grease interceptor. Are their other options?
9. How do I have a Gravity Grease Interceptor installed?