What Rockford Separators does

Rockford Separators, Inc. is a Rockford, Illinois-based manufacturer specializing in gravity-based separation systems for the plumbing industry. Founded in 1967, the company engineers and fabricates custom steel and stainless steel separator and interceptor units, trench drains, and catch basins, ranging in capacity from 1 gallon to 50,000 gallons across more than 35 product varieties and over 600 stock sizes. Its core technology applies the physical principle of gravity separation, using separator screens and removable filter screens to isolate lighter-than-water waste (grease, oil, lint) from heavier-than-water matter (sand, sediment), with a wet inlet design that prevents sewer air from entering premises. Product lines include grease separators, oil separators (including double-wall variants for environmental protection), lint separators, sand and sediment separators, grease and oil interceptors, stainless steel trench drains, garage drains, and catch basins.

The company operates from a single manufacturing facility at 5159 28th Avenue, Rockford, IL, and sells primarily through a nationwide network of independent sales representatives covering all U.S. states, supplemented by wholesale distribution. Pricing is custom and project-based, with no public price list; customers request quotes via the company website or by phone. The firm serves a heterogeneous base across restaurants, hospitals, manufacturing facilities, car washes, grocery stores, hotels, schools, laundromats, food processing plants, auto shops, and government buildings, with specification decisions often influenced by architects, engineers, and building officials who download CAD drawings and specification PDFs through the website's product specification tool. Differentiators emphasized include corrosion-resistant stainless and Cor-Ten steel construction, lifetime warranty on stainless units, quick custom-fab turnaround, and the recent RSP Series HDPE poly interceptor line (launched January 2026) extending the portfolio into rotationally molded plastic. Headcount is reported at 1–10 employees, and the company is privately held with no disclosed external investment.

Revenue is generated primarily through one-time hardware sales of custom and stock separation units, with a modest aftermarket stream from replacement parts such as screens, gaskets, covers, and bolt assemblies. Headcount of 1–10 employees, a single-site manufacturing footprint, and the absence of any funding rounds, M&A activity, or external investor signals indicate a small, owner-operated specialty industrial manufacturer focused on specification-channel depth rather than scale.

Name

Rockford Separators

Legal name

Rockford Separators, Inc.

Website

https://rkfdseparators.com

Company type

Private

Founded year

1970

Operating status

Operating

Headcount range

1–10 employees

Short description

Rockford Separators, Inc. is a Rockford, Illinois-based manufacturer of custom steel and stainless steel gravity separation systems, interceptors, trench drains, and catch basins for commercial plumbing, serving restaurants, hospitals, industrial facilities, and other end users nationwide through a sales representative network.

Ownership category

akta.pro rank

Product category

Industrial Separation Equipment

NAICS

Metal Tank (Heavy Gauge) Manufacturing (33242), Plastics Plumbing Fixture Manufacturing (326191)

SIC

Miscellaneous Plastics Products (3080)

akta.pro primary industry

Pipes & Tubing (Metal, Plastic & Composite) (IMADALAC)

akta.pro secondary industry

Pipe Fittings, Couplings & Connectors (IMADALAD)

Keywords

• Grease separators
• Oil interceptors
• Trench drain systems
• Lint separators
• Sand sediment separators

Headquarters

HQ city

Rockford

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Infrastructure, Marketing or Sales, Technology or R&D

Revenue model

1. Industrial Separation Equipment Sales: Rockford Separators generates revenue through the manufacture and sale of custom steel and stainless steel separator/interceptor units, trench drains, and catch basins. Products range from small 1-gallon units to large 50,000-gallon custom installations. Revenue is primarily one-time hardware sales with potential for replacement parts (screens, gaskets, covers, bolt assemblies).

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Rockford Separators manufactures and sells custom-engineered steel and stainless steel separation systems for the plumbing industry, including grease separators, oil separators, lint separators, sand/sediment separators, grease and oil interceptors, trench drains, garage drains, and catch basins. The company also recently introduced RSP Series HDPE rotationally molded poly interceptors. All products are fabricated at the company's Rockford, IL facility using gravity-based separation technology, with custom builds available from 1 gallon to 50,000 gallons and over 600 stock sizes.

Product overview

Rockford Separators is a specialized manufacturer of industrial separation systems with over 50 years of experience. The company offers a comprehensive portfolio of steel and stainless steel separators, interceptors, trench drains, and catch basins. The product line includes: Grease Separators (G Series, G-C Series, GF Series, RTO Series, GIS Series) for commercial kitchens and food service; Oil Separators (OS, OST, OS-DW, OST-DW, GOST, GOST-DW, ROI, ST Series) for vehicle service and industrial applications; Lint Separators (RLSW Series, RLS Series Light/Heavy Duty) for laundromats; Sand/Sediment Separators (RCB Series, GSS Series) for car washes; Grease Interceptors (RSP-G, RP, RP-SS, RPD, RPDC, R-Poly, RGI, RPS/RSI Series); Oil Interceptors (RSP-O Series); Trench Drains (RSTD Series in stainless steel); Garage Drains (RSD Series, SD Series); and Catch Basins (RSSTB Series). The company also recently introduced RSP Series HDPE Poly Interceptors as a corrosion-resistant alternative. Products range from 1 gallon to 50,000 gallons capacity with over 600 stock sizes available plus custom manufacturing capabilities.

Differentiator

Problem solved

Functional benefit

Products and services

• G Series Grease Separator
• G-C Series Grease Separator
• GF Series Grease Separator
• RTO Series Grease Separator
• GIS Series Grease Separator
• OS Series Oil Separator
• OST Series Oil Separator
• OS-DW Series Oil Separator
• OST-DW Series Oil Separator
• GOST Series Oil Separator
• GOST-DW Series Oil Separator
• ROI Series Oil Separator
• ST Series Oil Separator
• RLSW Series Lint Separator
• RLS Series Light Duty Lint Separator
• RLS Series Heavy Duty Lint Separator
• RCB Series Catch Basin and Sand Interceptor
• GSS Series Sand & Sediment Separator
• RSP-G Series Grease Interceptor
• RP Series Grease Interceptor
• RP-SS Series Grease Interceptor
• RPD Series Grease Interceptor
• R-Poly Series Grease Interceptor
• RGI Series Grease Interceptor
• RPS and RSI Series Solids Interceptors
• RSP-O Series Oil Interceptor
• RSTD Series Stainless Steel Trench Drain
• RSD Series Garage Drain
• SD Series Combination Separator Drain
• RSSTB Series Triple Basin Catch Basin
• RSP Series HDPE Rotationally Molded Poly Interceptors

Quantifiable outcome

• Over 50 years of industry experience in separation systems
• +3 more outcomes

Named customers12 records

Segments7 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Scale indicators4 records

Recent moves5 records

Expansion highlights4 records

Broad incumbents

• Zurn Industries: Large diversified manufacturer of commercial plumbing products including drainage, interceptors, and water management systems. Overlaps with Rockford's separator and trench drain categories as part of a much broader portfolio.
• Watts Water Technologies: Global plumbing and water quality products company with drainage and separator offerings. Competes with Rockford in commercial plumbing specifier channels via a far larger product portfolio.
• Josam Company: Manufacturer of commercial drainage and plumbing products including grease/oil interceptors and floor drains. Competes with Rockford in the specifier channel for non-residential construction projects.
• Jay R. Smith Mfg. Co. Established manufacturer of commercial drainage products including interceptors, drains, and cleanouts. Comparable to Rockford in plumbing specification-driven sales for institutional and commercial construction.

Emerging players

• Ashland PolyTrap: Specialty plastics manufacturer producing poly interceptors and drainage components. Emerging competitive overlap with Rockford's HDPE poly interceptor line introduced in 2026.

Direct peers

• Canplas Industries: Plumbing products manufacturer offering grease interceptors and drainage fittings. Competes with Rockford's HDPE/poly interceptor lines and serves overlapping plumbing contractor and wholesaler channels.
• Thermaco: Specialty manufacturer of grease interception and separation equipment for foodservice and plumbing. Competes head-to-head with Rockford in grease separators/interceptors across commercial kitchen and food processing end markets.
• MIFAB: Manufacturer of plumbing drainage products including grease interceptors, oil separators, and floor drains. Comparable to Rockford across both separators/interceptors and trench/garage drain categories.
• Schier Products: Manufacturer of commercial grease interceptors and separators for foodservice and plumbing applications. Direct competitor to Rockford's grease interceptor product lines, with overlapping end markets in restaurants and commercial kitchens.

Regional players

• Drain-Net Products: Regional supplier of commercial plumbing drainage products including grease traps and separators serving foodservice operators. Adjacent competitor to Rockford's restaurant/foodservice channel with narrower geographic reach.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Instagraminstagram.com/rockfordseparators
• Facebookfacebook.com/Rockford-Separators-392900210920861
• LinkedInlinkedin.com/company/rockford-separators

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Rockford Separators