Sizing Up (or Down) Grease Interceptors

grease interceptor types - Endura XL 75-150 GPM vs Endura 7-50 GPM

When selecting grease interceptors, it is a good idea to choose the right size upfront.

Attempting to save money by buying a model too small for your application will result in high maintenance costs via weekly pump-outs. And that’s if you’re lucky enough to avoid a full-out kitchen backup.

On the other hand, investing in a grease interceptor that is too big isn’t a good idea either. With larger interceptors, owners may leave too long between cleanings, allowing grease to rot and eat away at the interiors. But enough about what happens when interceptor selection goes wrong. Let’s talk about how to get it right.

Start with a sizing calculator

Many grease interceptor manufacturers provide an online calculator that helps determine the optimal grease interceptor size for your application. Just gather your appliance’s manuals, punch in the required dimensions and specs, and voila. Here is the interceptor best suited to your needs. For calculators that display a table of options and flow rate in gallons per minute (GPM), remember to always round up.

What if the kitchen isn’t built yet?

Endura XL hydromechanical grease interceptor installation

While there are formulas that can calculate the ideal GPM of a facility, the best course of action is to contact the manufacturer. These professionals live and breathe separation technology, and have very likely seen the situation you’re in numerous times. The peace of mind provided by their professional opinion alone is definitely worth it, not to mention the time saved. In fact, we recommend taking this step even if the result provided by your sizing calculator is absolutely ideal. 

In grease management, selecting the right interceptor upfront can save you a great amount of work down the line. With your interceptor sizing nailed, you’ll be able to focus on the aspects of your business that is important to you.


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