How to Install a Grease Trap — 10 Simple Steps

How to install a Grease Trap

For a typical under-sink grease trap, installation is usually:

  1. Choose the location — install the grease trap close to the kitchen sink, with enough space to open the lid and remove the basket for cleaning.

  2. Identify INLET and OUTLET — make sure the wastewater pipe from the sink connects to the INLET, and the OUTLET connects toward the drain.

  3. Install the under-sink food basket/strainer — this catches food solids before they enter the grease trap. For your system, this should be the real perforated double-compartment basket design you showed earlier, not a frying basket.

  4. Connect sink → basket → grease trap — wastewater should flow naturally toward the grease trap without unnecessary sharp bends.

  5. Connect the grease-trap outlet → drain — use correctly sized plumbing and maintain appropriate drainage fall.

  6. Check internal components — confirm the basket, baffle(s), inlet/outlet fittings, and other removable components are installed in their correct positions.

  7. Seal all pipe connections — connections should be watertight and properly supported; don't rely on the grease trap itself to support pipe weight.

  8. Close and secure the lid — ensure the lid/gasket sits correctly to help prevent leaks and odour.

  9. Run a water test — turn on the sink and check that water enters and exits normally. Check every connection for leakage, backup, or abnormal flow.

  10. Final inspection — confirm the unit is level, accessible for maintenance, and operating correctly.

For grease traps, Bio-Enzyme solutions, Auto Dosing Units and grease management solutions, contact GreaseGo.

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