Rockford RGI-1500 Gravity Grease Interceptor – 1,500 Gallon, 7,560 lb, 900 GPM, H20 Rated
Rockford RGI-1500 — Gravity Grease Interceptor, 1,500 Gallon / 7,560 lb / 900 GPM
The Rockford Separators RGI-1500 is a very large, two-compartment, all-welded steel gravity grease interceptor engineered for the highest-volume commercial food service and institutional facilities. With a 1,500-gallon liquid holding volume, 7,560 lb greasy sludge capacity, and a cover rated for H20 heavy truck traffic, the RGI-1500 handles up to 900 GPM intermittent peak flow from multiple kitchen drain lines simultaneously. Two independent 6" manways allow compartment-by-compartment service and inspection. All-welded steel with bituminous exterior coating. Built to IAPMO/ANSI Z1001-2014. Custom-built to order in Rockford, IL — non-returnable.
Free Freight — Lower 48 States: The RGI-1500 ships with free freight to any address in the contiguous United States. Lift gate service is required for delivery — please ensure a lift gate is requested at time of order.
Key Features of the Rockford RGI-1500
Custom-Built to Order — Non-Returnable: The RGI-1500 is fabricated to order. Confirm capacity, manway height, pipe configuration, and local plumbing code requirements with your engineer or plumbing inspector before placing your order. Returns are not accepted on custom units.
RGI-1500 Specifications
| Model | RGI-1500 |
|---|---|
| Series | RGI — Gravity Grease Interceptor |
| Liquid Holding Capacity | 1,500 Gallons |
| Greasy Sludge Capacity | 7,560 lb |
| Flow Rate (Intermittent) | 900 GPM |
| Inlet / Outlet Connection | 4" Threaded |
| Vent Connection | 3" (Dual) |
| Manways | Two 6" Tall (Standard — Custom Height Available) |
| Width (Front to Back) | 60" |
| Length (Side to Side) | 120" |
| Height (Floor to Top) | 60" |
| Top to Center of Inlet | 14" |
| Top to Center of Outlet | 16" |
| Bottom to Center of Inlet | 52" |
| Bottom to Center of Outlet | 50" |
| Approx. Ship Weight | 2,800 lb |
| Body Construction | All-Welded Steel, Bituminous Coating (Exterior) |
| Cover | 3/8" Nonskid Diamond Treadplate, Stainless Flat-Head Screws |
| Gasket | Heavy-Duty Leak-Proof |
| Load Rating | H20 — Heavy Truck Traffic |
| Lifting | 4 Lifting Lugs Supplied |
| Construction Standard | IAPMO/ANSI Z1001-2014 |
| Shipping | Free Freight — Contiguous 48 States (Lift Gate Required) |
| Installation | Flush-with-Grade or Above-Ground |
| Order Notes | Custom-Built to Order — Non-Returnable |
| Manufacturer | Rockford Separators, Rockford, IL |
Frequently Asked Questions
What is the greasy sludge capacity of the RGI-1500?
The RGI-1500 holds 7,560 lb of greasy sludge across its 1,500-gallon two-compartment liquid volume — providing very long service intervals between pumpouts for the largest commercial food service operations.
How does the two-compartment design benefit FOG separation?
The first compartment captures the bulk of grease and solids as the high-velocity kitchen discharge slows down. The second compartment provides additional gravity separation before the clarified effluent exits to the sewer — more effective than a single-chamber unit of equal volume.
Can the RGI-1500 handle heavy truck traffic?
Yes. The 3/8" nonskid diamond treadplate cover is H20 load rated — rated for commercial and highway truck traffic. The unit can be installed flush with grade in parking lots, loading areas, and service drives where vehicles cross the cover.
Is the RGI-1500 returnable?
No. The RGI-1500 is custom-built to order and non-returnable. Confirm capacity, manway height, pipe sizes, and local plumbing code requirements with your engineer or plumbing inspector before ordering.
Can the manway height be customized?
Yes. The standard RGI-1500 ships with 6" tall manways. If the unit will be buried deeper or installed under a paved overlay, specify the required manway height at time of order.
What construction standard does the RGI-1500 meet?
The RGI-1500 is built to IAPMO/ANSI Z1001-2014 — the nationally recognized construction standard for fabricated gravity grease interceptors, referenced by commercial plumbing codes across the United States.
| Brand | Rockford Seperators|Grease Traps |
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| SKU | RGI-1500 |
| Brand | Rockford Seperators|Grease Traps |
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