Rockford RP-20-LO Low Profile Grease Trap – 20 GPM, 40 lb. Capacity, 10" Height
Rockford RP-20-LO Low Profile Grease Trap — 20 GPM, 40 lb. Capacity
The Rockford Separators RP-20-LO is the low-profile version of the proven RP-20 grease interceptor, engineered for restaurants and commercial kitchens where vertical clearance is tight. At just 10 inches tall with a 20 GPM intermittent flow rate and a 40 lb. PDI-rated grease capacity, it fits beneath three-compartment sinks, prep tables, and bar wells where a standard-height unit simply will not.
Key Features of the RP-20-LO
Built in Rockford, Illinois on the same all-welded steel platform Rockford Separators has refined for decades — re-engineered for installations where every inch of clearance counts.
10" Low-Profile Body
Three inches shorter than the standard RP-20 (13"), the low-profile design slides into cabinet bases, kick-spaces, and slab-on-grade installations that would otherwise require breaking concrete.
PDI-G101 Listed
Sized and tested to the Plumbing & Drainage Institute G101 standard — the benchmark health inspectors and plumbing code officials recognize for grease-trap performance.
All-Welded Steel + Enamel Coating
Continuous-weld steel construction with enamel coating inside and out resists corrosion from acidic kitchen waste and prolongs service life in heavy-use commercial environments.
3/8" Diamond Treadplate Cover
Removable nonskid treadplate cover is rated for pedestrian traffic and secured with stainless steel flat-head screws — safe to walk on in flush-with-floor installations.
Built-In Flow Control + Air Relief Bypass
A 3" no-hub flow control device ships standard, along with an air relief bypass — the two components that make a PDI-rated grease trap operate at its rated GPM in the real world.
Flexible Installation
Install flush-with-floor, partially recessed, or on-the-floor — the same casting handles all three mounting strategies with no field modifications required.
Sizing note: The RP-20-LO is sized per the PDI-G101 standard, which assumes a 1-minute drain-down from a properly sized fixture and routine cleaning before the 25% grease-capacity mark. Verify your local plumbing code — some jurisdictions require larger interceptors or an external sample box even when the PDI rating is met.
Ideal Applications
The 20 GPM rating covers a single three-compartment sink or two prep sinks at typical commercial fixture flow rates, while the 10" body opens up locations where a standard interceptor will not fit.
RP-20-LO Specifications
| Brand | Rockford Separators |
|---|---|
| Model | RP-20-LO |
| Series | RP Series — Low Profile |
| Intermittent Flow Rate | 20 GPM |
| Grease Capacity (PDI rated) | 40 lb. |
| Static Liquid Holding Capacity | 11.25 gallons |
| Inlet / Outlet Connection | 3" no-hub |
| Flow Control Device | Included (standard) |
| Air Relief Bypass | Included (standard) |
| Width (D) | 23" |
| Length (E) | 32" |
| Height (F) | 10" |
| Top to Center of Outlet (A) | 3.5" |
| Side to Center of Inlet/Outlet (B) | 10.125" |
| Bottom to Center of Inlet/Outlet (C) | 6.5" |
| Shipping Weight | 130 lb. |
| Construction | All-welded steel, enamel coating inside & outside |
| Cover | Removable 3/8" nonskid diamond treadplate, stainless steel flat-head screws |
| Installation Options | Flush-with-floor, partially recessed, or on-the-floor |
| Traffic Rating | Pedestrian traffic |
| Certification | PDI-G101 Listed |
| Optional Features | Tapped inlet/outlet, epoxy coating, integral extensions, stainless steel construction (see RP-20-LO-SS) |
| Country of Origin | Made in USA — Rockford, IL |
Frequently Asked Questions
What does the "LO" in RP-20-LO stand for?
LO stands for Low Profile. It identifies the slim-body version of the standard RP-20 — same 20 GPM flow rate and 40 lb. grease capacity, but with a reduced 10" overall height instead of the standard 13".
How is the RP-20-LO different from the standard RP-20?
The hydraulic performance is identical — 20 GPM and 40 lb. grease capacity on both. The LO version is 10" tall versus 13" on the standard RP-20, but uses a larger 23" × 32" footprint (vs. 18.75" × 27") to maintain the same internal volume in a lower profile.
Is the RP-20-LO PDI certified?
Yes. The RP-20-LO is listed to the Plumbing & Drainage Institute G101 standard, which is the certification most U.S. plumbing codes and health departments require for grease interceptors.
Does the RP-20-LO come with a flow control device?
Yes — a 3" no-hub flow control fitting and air relief bypass ship standard with the unit. Both are required to achieve the PDI-rated 20 GPM flow in service, and you should not install the trap without them.
Can the RP-20-LO be installed flush with the floor?
Yes. The removable 3/8" diamond treadplate cover is rated for pedestrian traffic and secured with stainless steel flat-head screws, making the unit safe to install flush-with-floor, partially recessed, or on-the-floor.
What's the difference between the RP-20-LO and RP-20-LO-SS?
The RP-20-LO has a carbon steel body with enamel coating inside and out. The RP-20-LO-SS is the all-stainless-steel version — better suited to acidic waste streams, dairy operations, and installations where corrosion resistance justifies the price difference.
| Brand | Rockford Seperators|Grease Traps |
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| SKU | RP-20-LO |
| Brand | Rockford Seperators|Grease Traps |
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