ACS rotary airlock valves & feeders


ACS Valves designs, engineers, and manufactures high-quality rotary valves for metering, feeding, and airlock in bulk material processing and pneumatic conveying applications.

With a wide variety of products built to convey a wide range of materials, ACS Valves has made it their business to become experts in your industry. They research your industry, know your materials handling system, and make it a point to keep business operations in North America, casting locally using 65% US steel.

View 3D models of ACS rotary valves
  • Texas
  • Louisiana
  • Oklahoma
NFPA compliant rotary airlock valves
ACS Rotary valve square series CI
MD Series Rotary Valve by ACS Valves

ACS Valves is owned and operated by two generations of the Thompson family. Tom Thompson is the founder and CEO and his son and daughter Greg and Megan are co-COO & Presidents. It’s not just a job – They have a personal stake in helping their customers succeed. So you can count on reliable service and high-performance products from ACS Valves. Every time.

Learn why so many choose ACS Valves.

System knowledge

Early in their company history, ACS manufactured entire pneumatic conveying systems. While they decided to focus their attention on valves, they continue to design products with the big picture in mind. Knowing what goes on above and below the valves, ensures improved line performance and efficiency, along with the ability to troubleshoot issues beyond the valve.

Industry knowledge

Every industry has its own manufacturing priorities, challenges and regulations. ACS Valves continues to design new valves and add-on features to accommodate these manufacturing specific environments and industry regulations.

Lifecycle commitment

As a company that designs and builds all of their valves in-house, ACS Valves provides consistent support and troubleshooting with their products — even if it requires onsite visits.

Designed and built in North America

ACS Valves keeps all business operations — engineering and manufacturing — in southern Ontario, where they can control supply.

Cast locally using 65% US steel, their durable valves have longer maintenance cycles, less seal leakage and greater precision tolerances. Local manufacturing also means faster production time. Not only do they reduce their carbon footprint, they also ship orders much faster.

Standardized safety

No matter what valve you order, it will come with safety covers, an 8-vane rotor and outboard bearings. That means all ACS valves are compliant with the Occupational Safety and Health Administration (OSHA) and the National Fire Protection Association (NFPA).

At no extra charge to you. It is simply part of the valve design.


3D View of Multi-Port Rotary Valve

Rotor Assembly Tolerance Check


Rotary Valve Selector Guide
Reference information on how to evaluate, compare & select a rotary valve, feeder or airlock for your application.
ACS Valves Literature Library
ACS Valves product datasheets, brochures and technical schematics available for download.
NFPA Compliance
DHAs are due 9/7/2020. From NFPA Kit to NFPA pocket guide, find all NFPA Compliance resources for your Rotary Valve here.

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