What is the minimum rated flow capacity for a grease trap?

The minimum rated flow capacity for a grease trap is an essential requirement to ensure proper functioning and compliance with plumbing codes. A rating of 20 gallons per minute (gpm) is often established for grease traps in commercial kitchen settings, as this capacity allows the trap to effectively handle the volume of wastewater produced during peak usage times, thereby preventing grease buildup that could lead to plumbing issues.

A grease trap is designed to intercept and hold grease and solids before they enter the sewer system, which helps maintain proper sanitation and avoids clogging. If the grease trap has a lower flow capacity, it may not adequately service the facility, resulting in a higher likelihood of grease escaping into the drainage systems, consequently causing blockages and other sanitary issues.

While other capacities mentioned may be applicable in different scenarios or for varying applications, the generally accepted minimum rating is 20 gpm for standard grease trap installations in commercial kitchens. This standard ensures that the draining water does not overwhelm the grease trap and allows enough time for grease to rise and be captured effectively.