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How to size a Big Dipper grease trap

SINGLE FIXTURE
Use this chart to help size Big Dipper equipment that will service a single fixture. Single fixture Big Dipper equipment is designed to sit on the floor beside the fixture it is servicing.  

Big Dipper Sizing Chart IS

 
MULTIPLE FIXTURES
Use this chart to help size Big Dipper equipment that will service multiple fixtures. Use standard Big Dipper systems for cases where the Big Dipper is less than 4 feet (1.25 m) beneath the fixtures being serviced.  

Big Dipper Sizing Multiple Fixtures

Note: Always use next larger size unit than the calculated flow rating.  In this case, a W-500-IS-E system would adequately handle the kitchen flow.