How do I know what size grease trap I need?
Sizing a Grease Trap by Flow Rate:
- Measure your sinks.
- Convert the capacity from total cubic inches to gallons per minute (GPM) by dividing by 231:
- Add any additional appliances (optional)
- Determine the flow rate and drainage period.
What is the minimum size of a grease trap interceptor?
a) The minimum access opening dimensions shall be 18 inches x 18 inches or a minimum of 24 inches in diameter.
How big of a grease trap do I need for my restaurant?
The overall size of the trap is determined by the number of gallons of water flowing down your drains, which is your rate of incoming flow. You’ll also want to make sure your grease trap’s rated capacity is twice your flow rate. For instance, the rated capacity of a 20 gallon per minute (GPM) grease trap is 40 pounds.
How many gallons does a grease trap hold?
The Plumbing & Drainage Institute (PDI) recommends that all dish machines have their own grease trap. Here are some recommendations: 10-15 Gallon Capacity Dish Machine Tank: 15 Pound Grease Trap. 20-30 Gallon Capacity Dish Machine Tank: 20 Pound Grease Trap.
How do you pick a grease trap?
Five Tips for a Grease Trap
- Consider the Placement. The placement of a grease trap is important and depends on the layout of the kitchen and grounds.
- Think About Size. The size of the grease trap depends on the amount of water that you use.
- Find the Best Material.
- Decide on the Installation Method.
- Consider Maintenance.
How do you calculate the flow rate of a grease trap?
See the steps below to calculate the flow rate:
- Calculate the volume of the fixture your grease trap is servicing.
- Convert the volumetric unit in cubic inches to gallons.
- Multiply the volume in gallons by the fill factor.
- Determine the drainage period.
- You should now have the expected flow rate of your set-up.
What is the difference between a grease trap and a grease interceptor?
Grease traps handle flow rates of 10–50 gallons per minute, while grease interceptors accommodate flow rates of more than 50 gallons per minute. Pressure. Grease traps work best in a low-pressure water environment, whereas grease interceptors are more appropriate for high-pressure environments.
What is the difference between a hydromechanical grease interceptor and a gravity grease interceptor?
Hydromechanical grease interceptors (HGI or trap) are smaller devices that can be installed above or below ground, as well as outside or inside of a facility. Gravity grease interceptors (GGIs) are larger in-ground tanks, typically installed outside the facility.
What is the maximum number of fixtures allowed to be connected into any grease trap?
four
Not to exceed four (4) separate fixtures shall be connected to, or discharged into, any one grease trap or interceptor.
Can a grease interceptor be too big?
If your grease trap is too large, then you’ll spend more money than you need to, get longer detention rates and get into the bad habit of not regularly cleaning it (because you’ve got extra space, why clean it more often?). There are three methods of sizing a grease trap.
How do you calculate the flow rate of a grease interceptor?
To size a Gravity Grease Interceptor with the flow determined in GPM you simply multiply the flow number by a detention time, 30 minutes (the time period normally excepted for the grease to separate by buoyancy). Again with our 20 GPM example, the size would be 20X30= 600. A 600 Gallon size interceptor would be used.
How do you size a grease arrestor?
The recommended grease arrestor size is calculated as follows: 0.5L/sec x 3600 sec/hour = 1800L/hour. Therefore the recommended size is 2000L (From Table 2).
How do you size a grease interceptor?
Can a grease trap be above ground?
Above ground grease traps are the most commonly installed due to the vast product range and the easy location access, especially in an existing kitchen or designed into a new build establishment.
How do you size a hydromechanical grease interceptor?
Hydromechanical grease interceptors are tested at their rated flow, which is their size designation. In other words, a 20-gpm size is tested with a 20-gpm flow of grease-laden water. With an expected maximum flow of 20 gpm, you would use a 20-gpm-size interceptor.
Can a commercial dishwasher drain into a grease trap?
Unless specifically required or permitted by the Authority Having Jurisdiction, no food waste disposal unit or dishwasher shall be connected to or discharge into any grease interceptor. Commercial food waste disposers shall be permitted to discharge directly into the building’s drainage system.
What is the minimum outlet size of a commercial grease arrestor?
1500L
Grease arrester For example, a cooking process involving a wok burner may generate high volumes of waste water and the minimum size of the grease arrestor required would be 1500L. Fast food outlets such as McDonalds, Red Rooster and KFC require grease arrestors with a minimum capacity of 1500L.
Can I install my own grease trap?
Is It Possible to Install a Grease Trap on My Own? Unless you’re an experienced plumber you probably won’t want to attempt to install your own grease trap. Improperly installed grease traps may allow fats, oils and grease (FOG) to escape into the sewer, where it could cause a clog.