indoor grease trap
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1. INDOOR GREASE TRAP INTERCEPTOR SIZING GUIDE Depending on your specific grease capturing needs an indoor grease trap interceptor may be an effective measure for preventing the discharge of fats oils or grease into the sanitary sewer system Manufactured interceptors come in varying sizes usually based on a flow rate of gallons per minute or GPM We recommend con sulting with a licensed plumber when determining the size of your interceptor But for basic guidance the following steps could be useful in determining the appropriate size of your new indoor grease trap interceptor Step 1 Determine the cubic size of your sink s by multiplying its length width and depth together L x W x D Step 2 Convert that number into gallons using the following conversion 1 gallon 231 cubic feet Step 3 Estimate the capacity of the sink s measured in Step 1 Usually 75 of the sink s will be filled with water the remaining 25 will be dishes utensils etc Multiply that factor as a percentage e g 75 0 75 25 0 25 etc by the number you calculated in Step 2 This will also serve as your flow rate Step 4 Select a trap interceptor that is the next size higher than your calculated flow rate Example your calculated flow rate is 78 GPM Available interceptors are sized for 70 and 80 GPM The most appropriate choice is the latter an 80 GMP device Additional sizing guidelines can be found in the most recent addi2. 0 25 Floor drain 0 00 0 5 pipe 0 8 GPM fixture 1 0 5 0 GPM fixture 1 5 15 GPM fixture 2 0 33 GPM fixture 2 5 59 GPM fixture 3 0 93 GPM fixture 2 3 or 4 compartment sink 1 0 1 or 2 compartment meat prep sink 0 75 Pre rinse sink 0 5 1 or 2 compartment vegetable prep sink 0 25 Can wash 0 25 Mop sink 0 25 Floor drain 0 00 0 5 pipe 0 8 GPM fixture 1 0 5 0 GPM fixture 1 5 15 GPM fixture 2 0 33 GPM fixture 2 5 59 GPM fixture 3 0 93 GPM fixture 2 3 or 4 compartment sink 1 0 1 or 2 compartment meat prep sink 0 75 Pre rinse sink 0 5 1 or 2 compartment vegetable prep sink 0 25 Can wash 0 25 Mop sink 0 25 Floor drain 0 00 Using the charts above you can calculate the size of the interceptor you need Just plug them into the Manning Formula Interceptor Size Flow Rate x Fixture Ratings Discharge Rate x 24 minute retention time Direct flow from dishwashers laundry washers glass washers etc is the discharge rate as determined by the manufacturer This informa tion should be available in your user s manual or by contacting the manufacturer directly 24 minute retention time is the minimum amount of time needed for grease to cool condense and separate from liquid It is a con stant for the purposes of this calculation This guide and other helpful information including calculation e
3. ING GUIDE Outdoor in ground or above ground grease interceptors are ideal for restaurants and other food service facilities that produce large amounts of fats oil and grease during food preparation City Code allows for the use of two methods when sizing an outdoor intercep tor The first is based on criteria defined in the California Plumbing Code A licensed plumber can provide excellent interceptor solu tions to meet your needs based on this method The second is the application of the Manning Formula which is described here in greater detail The Manning Formula Interceptor Size in gallons Flow rate GPM sink or fixture x sum of fixture Ratings the Discharge rate from any mechanical washers i e dishwashers glass washers laundry machines etc x a 24 minute retention Time Flow Rates Fixture Ratings OUTDOOR GREASE INTERCEPTOR SIZING GUIDE Outdoor in ground or above ground grease interceptors are ideal for restaurants and other food service facilities that produce large amounts of fats oil and grease during food preparation City Code allows for the use of two methods when sizing an outdoor intercep tor The first is based on criteria defined in the California Plumbing Code A licensed plumber can provide excellent interceptor solu tions to meet your needs based on this method The second is the application of the Manning Formula which is described here in greater detail The Manning Formula Interc
4. Multiply that factor as a percentage e g 75 0 75 25 0 25 etc by the number you calculated in Step 2 This will also serve as your flow rate Step 4 Select a trap interceptor that is the next size higher than your calculated flow rate Example your calculated flow rate is 78 GPM Available interceptors are sized for 70 and 80 GPM The most appropriate choice is the latter an 80 GMP device Additional sizing guidelines can be found in the most recent addition of the California Plumbing Code A licensed plumber will be familiar with its provisions and can offer solutions unique to your needs This guide and other helpful information can be found on the City s website www cityoflakeport com CITY OF LAKEPORT MUNICIPAL SEWER DISTRICT Over 100 years of community pride progress and service City Hall 225 Park Street Lakeport CA 95453 Phone 707 263 5615 ext 30 E mail compliance cityoflakeport com INDOOR GREASE TRAP INTERCEPTOR SIZING GUIDE Depending on your specific grease capturing needs an indoor grease trap interceptor may be an effective measure for preventing the discharge of fats oils or grease into the sanitary sewer system Manufactured interceptors come in varying sizes usually based on a flow rate of gallons per minute or GPM We recommend con sulting with a licensed plumber when determining the size of your interceptor But for basic guidance the following steps could be useful
5. eptor Size in gallons Flow rate GPM sink or fixture x sum of fixture Ratings the Discharge rate from any mechanical washers i e dishwashers glass washers laundry machines etc x a 24 minute retention Time Flow Rates Fixture Ratings OUTDOOR GREASE INTERCEPTOR SIZING GUIDE Outdoor in ground or above ground grease interceptors are ideal for restaurants and other food service facilities that produce large amounts of fats oil and grease during food preparation City Code allows for the use of two methods when sizing an outdoor intercep tor The first is based on criteria defined in the California Plumbing Code A licensed plumber can provide excellent interceptor solu tions to meet your needs based on this method The second is the application of the Manning Formula which is described here in greater detail The Manning Formula Interceptor Size in gallons Flow rate GPM sink or fixture x sum of fixture Ratings the Discharge rate from any mechanical washers i e dishwashers glass washers laundry machines etc x a 24 minute retention Time Flow Rates Fixture Ratings 0 5 pipe 0 8 GPM fixture 1 0 5 0 GPM fixture 1 5 15 GPM fixture 2 0 33 GPM fixture 2 5 59 GPM fixture 3 0 93 GPM fixture 2 3 or 4 compartment sink 1 0 1 or 2 compartment meat prep sink 0 75 Pre rinse sink 0 5 1 or 2 compartment vegetable prep sink 0 25 Can wash 0 25 Mop sink
6. in determining the appropriate size of your new indoor grease trap interceptor Step 1 Determine the cubic size of your sink s by multiplying its length width and depth together L x W x D Step 2 Convert that number into gallons using the following conversion 1 gallon 231 cubic feet Step 3 Estimate the capacity of the sink s measured in Step 1 Usually 75 of the sink s will be filled with water the remaining 25 will be dishes utensils etc Multiply that factor as a percentage e g 75 0 75 25 0 25 etc by the number you calculated in Step 2 This will also serve as your flow rate Step 4 Select a trap interceptor that is the next size higher than your calculated flow rate Example your calculated flow rate is 78 GPM Available interceptors are sized for 70 and 80 GPM The most appropriate choice is the latter an 80 GMP device Additional sizing guidelines can be found in the most recent addition of the California Plumbing Code A licensed plumber will be familiar with its provisions and can offer solutions unique to your needs This guide and other helpful information can be found on the City s website www cityoflakeport com CITY OF LAKEPORT MUNICIPAL SEWER DISTRICT Over 100 years of community pride progress and service City Hall 225 Park Street Lakeport CA 95453 Phone 707 263 5615 ext 30 E mail compliance cityoflakeport com OUTDOOR GREASE INTERCEPTOR SIZ
7. or the purposes of this calculation This guide and other helpful information including calculation examples can be found on the Citys website www cityoflakeport com
8. tion of the California Plumbing Code A licensed plumber will be familiar with its provisions and can offer solutions unique to your needs This guide and other helpful information can be found on the City s website www cityoflakeport com CITY OF LAKEPORT MUNICIPAL SEWER DISTRICT Over 100 years of community pride progress and service City Hall 225 Park Street Lakeport CA 95453 Phone 707 263 5615 ext 30 E mail compliance cityoflakeport com INDOOR GREASE TRAP INTERCEPTOR SIZING GUIDE Depending on your specific grease capturing needs an indoor grease trap interceptor may be an effective measure for preventing the discharge of fats oils or grease into the sanitary sewer system Manufactured interceptors come in varying sizes usually based on a flow rate of gallons per minute or GPM We recommend con sulting with a licensed plumber when determining the size of your interceptor But for basic guidance the following steps could be useful in determining the appropriate size of your new indoor grease trap interceptor Step 1 Determine the cubic size of your sink s by multiplying its length width and depth together L x W x D Step 2 Convert that number into gallons using the following conversion 1 gallon 231 cubic feet Step 3 Estimate the capacity of the sink s measured in Step 1 Usually 75 of the sink s will be filled with water the remaining 25 will be dishes utensils etc
9. xamples can be found on _ the Citys website www cityoflakeport com Using the charts above you can calculate the size of the interceptor you need Just plug them into the Manning Formula Interceptor Size Flow Rate x Fixture Ratings Discharge Rate x 24 minute retention time Direct flow from dishwashers laundry washers glass washers etc is the discharge rate as determined by the manufacturer This informa tion should be available in your user s manual or by contacting the manufacturer directly 24 minute retention time is the minimum amount of time needed for grease to cool condense and separate from liquid It is a con stant for the purposes of this calculation This guide and other helpful information including calculation examples can be found on the Citys website www cityoflakeport com Using the charts above you can calculate the size of the interceptor you need Just plug them into the Manning Formula Interceptor Size Flow Rate x Fixture Ratings Discharge Rate x 24 minute retention time Direct flow from dishwashers laundry washers glass washers etc is the discharge rate as determined by the manufacturer This informa tion should be available in your user s manual or by contacting the manufacturer directly 24 minute retention time is the minimum amount of time needed for grease to cool condense and separate from liquid It is a con stant f
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