When you're outfitting a commercial kitchen, the warewashing sanitation grease setup is the unsung hero that keeps fats, oils, and grease out of your drain lines. Two stainless steel interceptors sit at the same buying decision point, each promising reliable oil-water separation. One is rated for a faster flow with built-in oil-handling extras; the other offers a larger holding volume and a complete kit. Which one should you put under your sink? The answer depends on how much oily wastewater you process and how often you want to access the unit.
Quick Verdict
For a prep sink or light dishwashing station with steady water flow, the QX 8LB 5GPM is the stronger candidate because it includes an automatic shut-off, an oil drain device, and a sampling port-features that make maintenance less disruptive. If you'd rather have maximum grease-holding volume and a ready-to-install kit, the under-sink 18-20L unit is the practical pick, especially when you want to keep the upfront cost down.
Comparison at a Glance
| Product | Listed Price | Price Bar | Rated Size / Capacity | Notable Features |
|---|---|---|---|---|
| QX 8LB 5GPM Stainless Steel Interceptor | USD 51.97 | 8LB / 5 GPM | Auto shut-off, oil drain device, sampling port | |
| Under-Sink Stainless Grease Trap | USD 49.07 | 18-20L | Includes lid and drainage pipe |
Where Each Product Wins
- QX 8LB 5GPM is the pick when you need a faster water flow and want the convenience of oil-control extras.
- Under-Sink Stainless Grease Trap is the pick when you want more room for captured grease and a ready-to-use kit.
Product Notes
QX 8LB 5GPM Stainless Steel Interceptor
The QX interceptor is aimed at kitchens that send a steady stream of oily water down the drain. The 5 GPM flow rating tells you it can keep up with a busy prep sink, and the description points to a compact structure that's easy to clean and can be installed outdoors or underground to avoid freezing. The maintenance-focused extras are the biggest reason to choose it: an automatic shut-off device, an oil drain device, and a sampling port let you check and drain collected oil without pulling the unit apart. It ships with accessories as shown. The trade-off is that its 8LB rating is the smaller grease-holding figure of the pair, so this unit may need more frequent attention in a kitchen that produces a lot of grease. For a higher-flow kitchen with regular oil drainage, this is the more capable setup.
Under-Sink Stainless Grease Trap
The under-sink stainless grease trap is the straightforward, big-capacity option. It lists an 18-20L capacity, which is the larger total volume of the two and translates to more room for captured grease between cleanings. The package is complete: you get the interceptor, a drainage pipe, and a lid, so the basic installation accessories are already there. The stainless steel body matches the QX unit's material, but this model doesn't mention the same automatic shut-off or sampling port, meaning you'll need to open the unit manually to check oil levels. Its dimensions of roughly 13.8 x 9.8 x 9 inches give it a wider, taller footprint than the QX interceptor, so confirm you have that space available. If you want the most holding capacity and the complete kit, this is the one.
Final Choice by Use Case
- Choose the $51.97 QX interceptor if your sink sees heavy or continuous water flow and you want the built-in oil-handling extras to make maintenance faster.
- Choose the $49.07 under-sink grease trap if you want the lower listed price and a stainless steel interceptor that's ready to connect under a sink.
