Grease, oil, and food residue from a restaurant sink have to be caught before they reach the drain line. The question is which warewashing sanitation grease interceptor belongs in your kitchen: a compact stainless steel set that covers day-to-day output, or a high-capacity plastic separator built for heavier flow. Here's how to decide between the two.
Quick verdict
If your kitchen handles a smaller volume and you want a stainless steel body with installation accessories included, the Stainless Steel Grease Trap Interceptor Set at $49.02 is the straightforward pick. If your drain line sees continuous use and you need more holding capacity plus a faster flow rate, the 50L Grease Trap Interceptor Oil-water Separator at $70.15 is worth the extra $21.13.
At a glance
| Product | Listed Price | Capacity | Material | Included with unit |
|---|---|---|---|---|
| Stainless Steel Grease Trap Interceptor Set | $49.02 | 18-20L | Stainless steel | Drainage pipe, lid, installation accessories |
| 50L Grease Trap Interceptor Oil-water Separator | $70.15 | 50L/13.21gal | Plastic (PP, rubber) | Drainage pipe, gloves, sealing ring, assembly accessories |
Where each product wins
- The Stainless Steel Grease Trap Interceptor Set wins on material and footprint. Its 35x25x23cm body is the more compact of the two, and the included lid plus drainage pipe make it a complete starting setup for smaller sink areas.
- The 50L Grease Trap Interceptor Oil-water Separator wins on capacity and flow. With 50L of holding space and a 2.1T/4629.71lbs/h flow rate, it's built for kitchens that run a lot of water and grease through the line.
Product notes
Stainless Steel Grease Trap Interceptor Set For Restaurant Kitchen Commercial

The Stainless Steel Grease Trap Interceptor Set is the smaller, metal-bodied option in this pairing. It offers an 18-20L capacity and measures 35x25x23cm, so it takes up less cabinet space. The wastewater inlet and water outlet are both 4.8cm, and the grease outlet is 2.2cm. The package includes the interceptor, a drainage pipe, a lid, and all accessories required for installation. That's a practical setup if you want a durable stainless steel unit for a lower-volume restaurant or prep kitchen. The tradeoff is the smaller holding capacity: at 18-20L, it's best for modest sink output, and a busier kitchen will likely need the 50L separator's larger reservoir.
50L Grease Trap Interceptor Oil-water Separator Restaurant Kitchen Under Sink

The 50L Grease Trap Interceptor Oil-water Separator brings significant capacity to the table. Its 50L/13.21gal reservoir is roughly two and a half times the stainless steel set's capacity, and its 2.1T/4629.71lbs/h flow rate suits kitchens with continuous or high-volume water use. The grey unit is made from PP and rubber, measures 45x35x30cm, and works freestanding or under a countertop. The package includes a 78cm drainage pipe, a pair of gloves, and a sealing ring for assembly. Choose this one for a restaurant, cafe, or food-service setup that needs maximum capacity and faster flow. The tradeoff is the larger plastic body: it takes up more space and requires assembly before it's ready.
Final choice by use case
Choose the Stainless Steel Grease Trap Interceptor Set if you have a smaller kitchen, want a durable stainless steel unit, and don't need more than 18-20L of capacity. Choose the 50L Grease Trap Interceptor Oil-water Separator if your sink line handles high output, you want 50L of capacity and a 2.1T/hour flow rate, and you have room for a larger under-counter unit. Match the choice to the amount of grease your kitchen actually sends down the drain, and the right interceptor will be the one that keeps the line clear without taking over your cabinet space.