Grease traps aren't glamorous, but picking the wrong one can make your kitchen smell, back up, and fail a health check. Two stainless steel interceptors are facing off here: the 8LB 5GPM Stainless Steel Interceptor and the Stainless Under-Sink Grease Trap US. Both are built for warewashing sanitation and oil-water separation, but they take different approaches. This guide compares price, capacity, included parts, and the situations each one handles best, so you can buy with confidence.
Quick verdict
Go with the Stainless Steel Interceptor if you want a rated-flow unit and don't mind paying a bit more. Go with the Stainless Under-Sink Grease Trap US if you want a lower-priced, easy-to-install unit with a compact under-sink footprint and useful parts in the box.
Comparison table
| 8LB 5GPM Stainless Steel Interceptor | Stainless Under-Sink Grease Trap US | |
|---|---|---|
| Listed Price | $51.97 | $49.03 |
| Type Rating | 8LB 5GPM | 18-20L |
| Dimensions | 350×200×200mm (13.8×7.9×7.9") | 35×25×23cm (13.8×9.8×9") |
| Inlet/Outlet | 48mm | 4.8cm / 1.9" |
| Included | Interceptor with accessories | Interceptor, drainage pipe, lid |
| Notable features | Automatic shut-off, oil drain device, sampling port | Easy installation, creative design, durable material |
Where each product wins
The Stainless Steel Interceptor wins for heavy-duty separation. The rated flow capacity is the headline, and the description adds automatic shut-off, an oil drain device, and a sampling port. Those extras give you more control to keep grease from bypassing the trap. It also can be placed open air or underground to prevent freezing, which expands installation options. If your kitchen pushes a lot of grease through the drain at once, this rating gives you a concrete performance target.
The Under-Sink Grease Trap US wins for straightforward setup and price. It lists for $49.03, about $2.94 less than the interceptor, and the package already includes a drainage pipe and lid. The 18-20L capacity is clearly stated, and the compact dimensions make it an easy fit under a typical sink. If you want a unit that's easy to install and use right away, this is the one.
Product notes
8LB 5GPM Stainless Steel Interceptor
Choose this interceptor if your warewashing setup deals with heavy oil loads and you want a unit with a clear flow rating. The stainless steel construction and compact gravity separator are designed to handle mineral, animal, vegetable, and emulsified oils, according to the description. You can place it open air or underground to prevent freezing, which gives you extra installation flexibility. The trade-off is that the package only says 'interceptor with accessories' without spelling out which installation parts are included, so you may need to gather extras yourself, and it's the pricier of the two.
Stainless Under-Sink Grease Trap US
Choose this model for an under-sink install where simplicity matters. The stainless steel body is described as durable, and the package includes useful installation parts, so you're less likely to make a separate parts run. It's a good fit for a standard warewashing grease trap setup, with easy installation highlighted. The trade-off is that its listed capacity is expressed in liters rather than as a flow rating, so if your kitchen's grease load is high, you'll want to make sure that volume matches what the unit can handle. The extra installation parts and lower price make it an attractive first pick for many operators.
Final choice by use case
For heavy grease loads and installations that may go outdoors or underground, the higher-rated interceptor is the stronger fit. For a straightforward under-sink setup at a lower price, the under-sink grease trap is the one to buy. Both units are stainless steel and designed for oil-water separation; the decision comes down to whether you need the rated-flow extras or prefer the easier, lower-priced install.
