Rotary Airlock

What Rotary Airlock does

Rotary Airlock LLC is a US-based, privately-held industrial manufacturer specializing in rotary valves and airlock solutions, founded in 1995 and headquartered in Rock Falls, Illinois. The company designs, fabricates, and services drop-in replacement rotary valves (the RAS product line) as well as comprehensive valve rebuilds, supporting more than 1,900 makes and models and over 50,000 package configurations. Its core technology is precision fabrication from American steel — explicitly not casting — supported by a 25+ CNC and lathe-equipped single-site production footprint. The product portfolio is anchored by proprietary modular systems: the MAP Seal (USDA-compliant, in-line changeable food-safe seal), the CLF Bearing System (NFPA-69 compliant, in-line changeable), Direct Drives, the Rotor Detection System (RDS) for real-time condition monitoring, and a five-tier Abrasion-Resistant Package system. The company serves industrial customers across grain/milling, cement/aggregates, food/dairy, energy/alternative fuels, and dust collection, with explicit positioning in obsolete/discontinued OEM valve replacement and NFPA-69 fire-safety compliance.

Name

Rotary Airlock

Legal name

Rotary Airlock LLC

Website

https://rotaryairlock.com

Company type

Private

Founded year

1995

Operating status

Operating

Headcount range

101–250 employees

Short description

Rotary Airlock LLC is a US manufacturer of custom and replacement rotary valves, valve rebuilds, and proprietary seal and bearing systems for industrial customers in grain, cement, food/dairy, energy, and dust collection.

Ownership category

akta.pro rank

Product category

Industrial Rotary Valve Manufacturing

NAICS

Industrial Valve Manufacturing (332911)

SIC

Gaskets, Packg & Sealg Devices & Rubber & Plastics Hose (3050)

akta.pro primary industry

Seals, Valves & Auxiliary Components (for Pumps/Compressors) (IMAHANAH)

akta.pro secondary industry

Seals, Gaskets & Fluid Connectors (O-rings, packings, rotary seals, quick couplers) (IMAHAGAI)

Keywords

• Rotary airlock valves
• Industrial valve manufacturing
• Rotary valve rebuilds
• Bulk material handling equipment
• Precision machined components

Headquarters

HQ city

Sterling

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. New Rotary Valve Sales: Sale of new drop-in replacement rotary valves (RAS Valves) manufactured to exact specifications for any make or model. Valves are fabricated in USA with various performance packages.
2. Valve Rebuild Services: Precision rebuilding services that restore valves to like-new or better-than-new condition. Includes machining housing, manufacturing new endcaps and rotors, replacing bearings and seals.
3. Replacement Parts and Components: Sale of replacement parts including CLF Bearings, MAP Seals, and related components. Offers convenient replacement kits for quick maintenance.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels7 records

Core offering

Rotary Airlock manufactures custom rotary airlock valves and provides precision valve rebuilding services, fabricating drop-in replacement valves in American steel for more than 1,900 different makes and models. The company produces the RAS (Rotary Airlock Solution) valve line along with proprietary add-on systems such as the MAP Seal, CLF Bearings, Direct Drives, Abrasion Packages, and the Rotor Detection System (RDS), serving industrial bulk-material handling customers across grain/milling, cement/aggregates, food/dairy, energy, and dust collection sectors.

Product overview

Rotary Airlock LLC is a manufacturer of industrial rotary valves and airlock solutions, founded in 1995 and based in Rock Falls, Illinois. The company's product portfolio centers on the RAS (Rotary Airlock Solution) Valve product line as the core offering, supplemented by valve rebuild services. Key proprietary add-on modules include the MAP Seal System (in-line changeable food-safe seal), CLF Bearing System (NFPA-69 compliant bearing), Direct Drives (safety-focused power transmission), RDS Rotor Detection System (real-time monitoring), Abrasion Packages (5-tier material protection), and NFPA-69 Compliant Valves (fire safety configuration). The company fabricates valves from American steel in over 50,000+ configurations supporting 1,900+ makes and models.

Differentiator

Problem solved

Functional benefit

Brands

• RAS (Rotary Airlock Solution): The company's flagship product line featuring custom-manufactured rotary valves as drop-in replacements for any make or model.
• MAP Seal System
• CLF Bearing System
• Rotor Detection System (RDS)

Products and services

• RAS (Rotary Airlock Solution) Valves Drop-in replacement rotary valves fabricated from American steel designed as exact replacements for existing valves without requiring new flange patterns or equipment movement. Available in more than 50,000 package configurations supporting over 1,900 different makes and models, sold to industrial processing customers.
• Valve Rebuilds Comprehensive valve restoration service that reengineers valves to like-new or better-than-new condition through a 3-step process: machining housing to spec, manufacturing custom-fitted new endcaps and rotors, and replacing all bearings and seals. Offered to industrial customers looking to extend valve life at a fraction of new-valve cost.

Quantifiable outcome

• Valve life extended by approximately 6 months per abrasion package level increase
• +2 more outcomes

Named customers1 record

Segments5 records

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

One partnership is on record.

• NFPA (National Fire Protection Association)coreOthersRotary Airlock manufactures NFPA-69 compliant valves that meet the association's fire safety standards for rotary valves in explosive environments. Their CLF Bearing System and valves are certified compliant with NFPA-69 standards.

Scale indicators4 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• ACS Valves: ACS Valves is a Canadian manufacturer of rotary airlock valves and components for bulk solids handling, directly competing with Rotary Airlock in grain, cement, and plastics processing applications.
• DMN-Westinghouse: DMN-Westinghouse manufactures rotary valves and airlock feeders for bulk material handling and pneumatic conveying, the most direct product-line overlap with Rotary Airlock's RAS valves serving similar industrial verticals.
• Schlagel: Schlagel manufactures rotary and swing-gate valves for material handling, offering drop-in and custom-engineered rotary valve solutions comparable to Rotary Airlock's RAS line in agricultural and industrial bulk handling.
• Coperion (Hosokawa Alpine): Coperion is a global leader in compounding, extrusion, and material handling systems including rotary valves, directly competing in pneumatic conveying and bulk material handling for plastics, chemicals, and food verticals.
• Sprout Bauer (Andritz Feed & Biofuel): Andritz's Sprout Bauer brand manufactures rotary valves, pellet mills, and feed processing equipment, overlapping with Rotary Airlock in grain, feed, and biofuel processing applications.

Broad incumbents

• Schenck Process: Schenck Process is a global industrial equipment supplier providing material handling, weighing, feeding, and air filtration solutions, including rotary valves, serving many of the same cement, mining, and bulk material processing customers as Rotary Airlock.
• GEA Group: GEA is a large global industrial systems supplier for food, dairy, and beverage processing, where Rotary Airlock serves the food/dairy segment. GEA's broader portfolio includes separation, homogenization, and process equipment alongside flow-control components.
• Bühler Group: Bühler is a major global processing-equipment supplier for grain milling, food, and advanced materials, providing integrated systems in the same verticals where Rotary Airlock sells rotary valves, including flour milling and feed processing.

Emerging players

• AZO GmbH + Co. KG: AZO specializes in automated material handling and pneumatic conveying systems for bulk solids, including rotary valves, with comparable applications in food, plastics, and chemical processing markets.
• HammerTek (HammerTek Smart Elbow): HammerTek specializes in engineered components for bulk material handling and pneumatic conveying (e.g., Smart Elbow), addressing similar wear and material-handling problems as Rotary Airlock's abrasion-resistant rotary valve solutions.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/profile.php?id=61576523611732
• LinkedInlinkedin.com/company/rotary-airlock-llc/posts/?feedView=all
• Instagraminstagram.com/rotary.airlock.us
• Xx.com/rotaryairlockus

Compliance2 records

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 Rotary Airlock