Rockford RP-4-SS All Stainless Steel Grease Interceptor – 8 lb, 4 GPM, 2" No-Hub
Rockford RP-4-SS — All Stainless Steel Grease Interceptor, 8 lb / 4 GPM
The Rockford RP-4-SS is the all stainless steel version of Rockford's entry-level RP-4 grease interceptor — engineered for commercial kitchens where corrosion resistance and longevity are priorities. Rated at 4 GPM intermittent flow with 8 lb grease capacity and a 3.75-gallon static holding volume, it is ideal for small foodservice operations: coffee shops, juice bars, food carts, and concession stands. Features 2" no-hub inlet/outlet connections. Backed by a lifetime warranty, certified to PDI-G101, and manufactured in Rockford, IL.
Key Features of the Rockford RP-4-SS
RP-4-SS Specifications
| Model | RP-4-SS |
|---|---|
| Grease Capacity | 8 lb |
| Flow Rate (Intermittent) | 4 GPM |
| Static Holding Capacity | 3.75 Gallons |
| Inlet / Outlet | 2" No-Hub |
| Length | 18" |
| Width | 13" |
| Height | 10.5" |
| Bottom to Center of Inlet | 7" |
| Cover Material | 3/16" Nonskid Diamond Tread Plate (Stainless) |
| Body Construction | All-Welded Stainless Steel |
| Warranty | Lifetime |
| Compliance Standard | PDI-G101 |
| Installation Type | On-Floor or Flush-with-Floor |
| Manufacturer | Rockford Separators, Rockford, IL |
Frequently Asked Questions
What is the difference between the RP-4 and the RP-4-SS?
The RP-4 is built from all-welded carbon steel with enamel coating inside and out. The RP-4-SS is constructed entirely from stainless steel — body, cover, and fasteners — offering superior corrosion resistance, easier sanitation, and a lifetime warranty versus the standard unit. The flow rate and grease capacity (4 GPM / 8 lb) are identical.
What is the grease capacity of the RP-4-SS?
The RP-4-SS holds 8 lb of grease and sludge with a 3.75-gallon static liquid holding capacity. It is suited for small-volume commercial foodservice operations such as coffee shops, juice bars, and concession stands with limited FOG discharge.
Does the RP-4-SS come with a warranty?
Yes — Rockford backs the RP-4-SS with a lifetime warranty. The stainless steel construction eliminates the corrosion and coating failure risks that can affect standard carbon steel units over time.
Can the RP-4-SS be installed flush with the floor?
Yes. The RP-4-SS supports both on-the-floor and flush-with-the-floor installation. The 3/16" stainless diamond tread cover is pedestrian-rated and secured with stainless flat-head screws for safe walk-over and easy cleanout access.
Is the RP-4-SS PDI-G101 certified?
Yes. The RP-4-SS is certified to the Plumbing & Drainage Institute PDI-G101 standard, ensuring acceptance by local plumbing and health authorities throughout the United States.
What connection size does the RP-4-SS use?
The RP-4-SS uses 2" no-hub inlet and outlet connections with an integrated flow control device. No-hub connections make installation straightforward with standard no-hub couplings — no threading or soldering required.
| Brand | Rockford Seperators|Grease Traps |
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| SKU | RP-4-SS |
| Brand | Rockford Seperators|Grease Traps |
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