Grease traps are the kind of purchase you postpone until a sink starts draining slowly or grease backs up into the wash station. If you're outfitting a commercial kitchen for warewashing sanitation grease, the decision often comes down to two very different designs: a compact stainless steel interceptor set and a larger plastic under-sink separator. Both are new, both separate oil from water, and both are meant to keep restaurant wastewater from turning into a plumbing problem. The choice is about what fits your space, your water volume, and your willingness to assemble.
Quick verdict: Pick the stainless steel set when you need a ready-to-install, space-saving grease trap for a smaller station. Pick the 50L plastic separator when you need to handle a steadier stream of oily wastewater under a busy sink.
| Feature | Stainless Steel Grease Trap Interceptor Set | 50L Grease Trap Interceptor Oil-water Separator |
|---|---|---|
| Price | USD 49.02 | USD 70.15 |
| Capacity | 18-20L | 50L / 13.21gal |
| Wastewater inlet diameter | 4.8cm / 1.9in | 4.5cm / 1.77in |
| Water outlet diameter | 4.8cm / 1.9in | 3cm / 1.18in |
| Assembly | All installation accessories included | Assembly required |
Where the stainless steel set wins
- Lower upfront cost.
- Stainless body in a compact size.
- Drainage pipe and lid included.
- Installation kit saves setup hassle.
Where the 50L plastic separator wins
- Listed flow rate of 2.1T per hour for steadier wastewater.
- Under-sink shape with freestanding placement.
- Lighter plastic body at 3.8kg net weight.
- Includes gloves and sealing ring.
Stainless Steel Grease Trap Interceptor Set
If you're working in a cramped prep area, the 35×25×23cm body is small enough to fit where a larger unit won't. The stainless steel construction is a sensible match for commercial use, and the package includes the drainage pipe and lid, so the key parts are there when you start. The even, smooth thread line on the head is a nice finishing detail. The trade-off is that a trap this size is better suited to lighter or intermittent wastewater flow; for constant heavy frying, you'll find yourself cleaning it out more often.
50L Grease Trap Interceptor Oil-water Separator
This one is built for volume. The PP plastic body keeps the unit manageable at a net weight of 3.8kg, and the listed flow rate of 2.1T per hour points to steady commercial throughput. The package includes the separator, drainage pipe, gloves, and a sealing ring, which is helpful for assembly. The water outlet is 3cm in diameter, noticeably narrower than the 4.8cm outlet on the stainless set, and assembly is required before you put it into service. It also has a larger footprint at 45×35×30cm, so you need cabinet clearance to take full advantage of the bigger capacity.
Final choice by use case
Choose the Stainless Steel Grease Trap Interceptor Set for a food truck, prep sink, or smaller restaurant station where space is tight and you want a lower upfront cost. Choose the 50L Grease Trap Interceptor Oil-water Separator for a busy kitchen, cafeteria, or bar that sends a steady stream of oily wastewater through a central under-sink line. Both solve the same problem; the right one simply depends on whether you need to save space or keep up with volume.
