Your commercial sink may handle dishes, but it also has to deal with the fat, oil, and grease that comes off cookware and plates. That's where a grease trap interceptor earns its place. In the warewashing sanitation grease category, two very different options sit side by side: a compact stainless steel set and a large plastic oil-water separator. The real question isn't which one is better overall-it's which one matches your kitchen's wastewater volume and under-sink space. If you choose wrong, you'll either be emptying the trap constantly or paying for space you don't use.
Quick verdict
If you want a smaller, metal-bodied interceptor for a tight prep area, the Stainless Steel Grease Trap Interceptor Set is the clearer pick. If you're dealing with a busier kitchen and need serious volume, the 50L Grease Trap Interceptor Oil-water Separator is the stronger choice. The price spread between the two is about $21, and it reflects a big jump in capacity rather than a small change in features.
Comparison table
| Product | Listed Price | Capacity | Material | What stands out |
|---|---|---|---|---|
| Stainless Steel Grease Trap Interceptor Set | USD 49.02 | 18-20L | Stainless steel | Compact 35 x 25 x 23 cm stainless steel set |
| 50L Grease Trap Interceptor Oil-water Separator | USD 70.15 | 50L/13.21gal | PP plastic and rubber | Flow rate 2.1T/4629.71lbs/h, top inlet and left outlet |
Where each product wins
- The Stainless Steel Grease Trap Interceptor Set wins when you want a compact metal interceptor with a lower listed price and a smaller footprint.
- The 50L Grease Trap Interceptor Oil-water Separator wins when you need a much bigger unit, a higher flow rate, and a freestanding design that can sit under a countertop.
Product notes
Stainless Steel Grease Trap Interceptor Set
This set gives you a stainless steel interceptor body, a drainage pipe, and a lid, so the package is ready to go to work in a small kitchen corner. The capacity is 18-20L, and the unit measures 35 x 25 x 23 cm, making it the more compact option in this pairing. The wastewater inlet and outlet both have a 4.8cm diameter, and the grease outlet is 2.2cm. At USD 49.02, it's the lower-priced choice and the only one in this pairing with a stainless steel shell. The limitation is the smaller holding capacity: at 18-20L, a high-volume kitchen will need to empty it more often than the larger unit.
50L Grease Trap Interceptor Oil-water Separator
This separator is built for volume. The 50L/13.21gal capacity and 2.1T/4629.71lbs/h flow rate put it in a different class than the compact stainless set. It's made from grey PP plastic and rubber, with a rectangular body that can sit freestanding or go under a countertop. The design uses a top water inlet and a left water outlet, and the package includes a drainage pipe, a seal, and a pair of gloves. At USD 70.15, it's the higher-priced option, but you're getting more than double the capacity of the smaller unit. The main trade-off is the plastic construction, but that's also part of how the unit reaches this capacity at this price.
Final choice by use case
For a small restaurant or prep sink where space is limited and you prefer a metal interceptor, choose the Stainless Steel Grease Trap Interceptor Set. For a full kitchen, fast-food chain, or public cafeteria producing more greasy wastewater, the 50L Grease Trap Interceptor Oil-water Separator is the better fit because it handles a higher flow rate and holds more.
