TL;DR
A grease interceptor is a tank plumbed into a kitchen drain line that slows wastewater so fats, oils, and grease float to the top and solids settle, releasing clarified water to the sewer. Codes based on the International Plumbing Code require them on commercial kitchens, sized by drainage fixture units or flow rate, from 25-GPM under-sink units to multi-thousand-gallon outdoor concrete vaults.
What it means
A grease interceptor is a tank plumbed into a kitchen drain line that slows wastewater so fats, oils, and grease float to the top and solids settle, releasing clarified water to the sewer. Codes based on the International Plumbing Code require them on commercial kitchens, sized by drainage fixture units or flow rate, from 25-GPM under-sink units to multi-thousand-gallon outdoor concrete vaults. Pumping on a schedule, often the 25 percent rule for accumulated solids, keeps the device legal and the sewer line clear.
Where it sits in the glossary
Grease interceptor is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
License: CC-BY-4.0 — quote freely with attribution to ProFix Editorial Team / ProFix Directory.