Best 20 GPM Grease Traps for Commercial Kitchens
If you are searching for a “20 gallon grease trap,” check whether you mean a 20-gallon tank or a unit rated for 20 gallons per minute (GPM). The two listed products rated at 20 GPM are the Zurn GT2700-20-2NH, with a stated 30-pound grease capacity, and the Canplas 3920A02S, with conflicting capacity figures to verify. Smaller-flow alternatives include models rated at 15, 13, and 4 GPM.
| Product | Listed flow rate | Stated grease capacity | Best for |
|---|---|---|---|
| Zurn GT2700-20-2NH | 20 GPM | 30 lb | High-demand use needing coated steel |
| Canplas 3920A02S | 20 GPM | 40 lb; listing also says 70 lb | Buyers comparing thermoplastic options |
| AmGood Carbon Steel | 15 GPM | 30 lb | A lower-flow commercial option |
| BEAMNOVA Stainless Steel | Up to 13 GPM | 25 lb | Smaller installations wanting stainless steel |
| BESEDER Plastic | 4 GPM | Not stated | Low-flow under-sink applications |
Zurn GT2700-20-2NH
Best for: Commercial kitchens looking for a 20-GPM grease trap with a stated 30-pound grease capacity. Its Dura-Coated fabricated steel construction is described as corrosion-resistant and suited to demanding environments.
The cover is described as slip-resistant and secured with a center tie-down assembly intended to help keep odors from escaping. These features make the Zurn a relevant choice when a sturdy steel body and secured cover are priorities.
Limitation: The listed grease capacity is 30 pounds, so this is not a 20-gallon storage tank based on the supplied product details. Confirm required sizing and installation specifications before purchase.
Canplas 3920A02S Thermoplastic Interceptor
Best for: Buyers seeking a thermoplastic interceptor rated at 20 GPM with a listed 2-inch connection. The product name gives a 40-pound grease capacity, while the feature details separately state a 70-pound actual grease capacity.
Its stated flow rate puts it directly in the 20-GPM category. The thermoplastic construction offers an alternative to the steel models in this selection, which may suit buyers who prefer a nonmetal housing.
Limitation: The listed grease-capacity figures conflict. Confirm the correct capacity, dimensions, and connection details with the seller or manufacturer before choosing it for a regulated installation.
AmGood 15 GPM Carbon Steel Trap
Best for: Buyers who need a commercial under-sink option and whose required flow rate is below 20 GPM. The listing states a 15-GPM flow rate and 30-pound grease capacity, along with no-hub connections and an included T-vent.
The product is identified as PDI certified in its supplied details. That makes it worth comparing when certification is part of the buyer’s requirements, while still confirming that the listed certification and unit sizing meet local rules.
Limitation: At 15 GPM, it is not a match if the installation specifically requires a 20-GPM rating.
BEAMNOVA 25-Pound Stainless Steel Trap
Best for: Smaller kitchens that want a stainless-steel unit with a stated flow rate of up to 13 GPM and 25-pound capacity. The listing describes 1.2 mm-thick 201 stainless steel and says the unit is delivered assembled with an outlet pipe and accessories.
Its side inlet and installation instructions may be useful when planning a compact sink-area setup. Choose this if the required flow rate is 13 GPM or less and the listed configuration suits the plumbing layout.
Limitation: Its stated maximum flow is below 20 GPM, so it is not a substitute for a unit sized at 20 GPM.
BESEDER 4 GPM Plastic Trap
Best for: Low-flow under-sink installations where a compact plastic interceptor is appropriate. The listing gives dimensions of 15.75 by 13.2 by 10.63 inches, describes 1/4-inch-thick plastic walls, and identifies a 4-GPM flow rate.
The supplied features describe a multistage cleaning system for oily water, including mineral, animal, and vegetable oils. Its plastic construction is presented as an alternative to metal that will not rust.
Limitation: The listed 4-GPM rate is far below 20 GPM. Avoid this model if your required flow rate is higher.
Buying Guide: How To Choose A Grease Trap
Do you need 20 gallons or 20 GPM?
GPM measures the rate of water flow through a unit; grease capacity is listed separately in pounds for several products here. A “20 gallon” search phrase may refer to a different tank-size specification. Confirm the exact required rating and unit before ordering rather than assuming a 20-GPM model holds 20 gallons.
How should you compare flow and grease capacity?
Start with the flow rate required for the fixtures connected to the interceptor, then compare the stated grease capacity. The Zurn and Canplas are listed at 20 GPM, but their capacity figures differ—and the Canplas details conflict. A lower-flow model may not be suitable for a kitchen whose plumbing or local requirements call for 20 GPM.
Which material and installation details matter?
Compare steel, stainless steel, and thermoplastic based on the product specifications and installation environment. Check dimensions, inlet and outlet configuration, connection size, venting, and access for cleaning. The Canplas listing gives a 2-inch connection; other supplied details emphasize features such as a secured cover, no-hub connections, or an included outlet pipe. Verify all plumbing requirements before installation.
Local plumbing codes and the authority having jurisdiction may specify interceptor sizing, certification, installation, and maintenance. Check those requirements and consult a qualified plumbing professional when needed.
Frequently Asked Questions
Is a 20 GPM grease trap the same as a 20-gallon grease trap?
No. GPM is a flow-rate measurement. A gallon capacity describes volume. Confirm which specification your project requires.
Which listed products are rated at 20 GPM?
The Zurn GT2700-20-2NH and Canplas 3920A02S are listed at 20 GPM.
What is the Canplas grease capacity?
The supplied details state both 40 pounds and 70 pounds. Verify the correct figure with the seller or manufacturer before purchase.
Can a 4-GPM model replace a 20-GPM model?
Not when the installation requires 20 GPM. The BESEDER model is listed at 4 GPM and is a lower-flow alternative.
Should I check local code before buying?
Yes. Local requirements may affect sizing, certification, installation, and maintenance. Confirm requirements before selecting a unit.