Bio
An industry-leading rotary valve manufacturer owned and operated by the Thompson family, ACS Valves has been in business for more than 36 years. Our conveying experts design, engineer, and manufacture rotary valves for metering, feeding, and airlock in bulk material processing and pneumatic conveying applications.
Our products are sold through a global network of sales representatives and supported by a corporate staff of applications engineers and customer services technicians. We stay up to date on industry regulations, engineering and design practices, and customer feedback, so we can continuously improve our designs and better serve our customers.
Read more about our company, our people, and our facilities here.
ACS has been featured in
- Powder & Bulk Solids
- ACS Valves Acquires Drummond Manufacturing (December 8, 2022)
- Sanitary Quick-Clean Valve Reduces Contamination (March 23, 2022)
- BulkInside
Written by ACS
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![A rotary valve inside a snow globe in a snowy landscape]()
BlogA day in the life of a valve
Ever wondered what goes on in the everyday life of a rotary airlock valve? Let’s see — there's turning, spinning, and a whole lot of nothing. Our valve will tell you all about it.
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Blog
How do I replace a rotary airlock valve?
Learn how rotary airlock valves are typically replaced.
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![Funnel of blue material flows into an abstract vortex]()
BlogQuiz: Material flow dos and don’ts
Check out these common material flow scenarios in valves, hoppers and silos to see if you know the solution
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![Piggy Bank on Conference Table]()
BlogSeriously, don’t buy a cheap valve
Quality machining, customization and aftermarket support add value to your rotary valve purchase
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Blog
I’m ordering a valve from the U.S. Do I need to worry about border delays or additional fees?
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![Close-up of a drive chain, part of a healthy rotary valve]()
BlogQuiz: Test Your Valve Maintenance IQ
Are you up to speed on the best rotary valve maintenance procedures?
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![NFPA compliance backdrop with pneumatic conveying system parts]()
BlogPop Quiz: NFPA Valve Compliance
How well do you know the NFPA rules as they relate to rotary valves?
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![CI Series rotary valve by ACS Valves]()
BlogCan your rotary valve fit in your bread box?
What does it mean to have one valve to rule them all? It means you can fit our valves into pretty much any space. Such as: a canoe, a fishing tackle box, and a cooler for your carefully selected beer.
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![magnified view of metal corrosion]()
BlogHow to prevent corrosion and cross-contamination in your rotary valves
Even the smallest bit of rust from corroded machinery can damage your end product. Here's how to keep your product looking great.
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![NFPA Safety It's not just about the airlock]()
BlogNFPA Safety: It's Not Just About the Airlock
On-demand one hour webinar on NFPA Safety.
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![profile photo of acs valves president Megan Thompson]()
BlogQ&A with ACS
You asked. We answered.
Our live webinar on May 14, Understanding Airlocks, concluded with a lively Q&A session. In case you missed it, here are the questions you asked, along with our answers.
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![ACS Leaks Blog Image - Tire with Nails and Screws]()
BlogWhy airlocks leak and how to minimize leakage
Leakage happens. Find out to manage and minimize it.
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![rusted nut and bolt on a blue background]()
BlogWhy you can't afford an unreliable valve
We'll give you 7 good reasons.
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![ACS Valves Website on Laptop]()
BlogA new website for your convenience
Welcome to our newly renovated space! Feel free to look around.
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![rotary airlock valve with cartoon eyes and smile]()
BlogAn interview with our valve
Our CI Series valve was interviewed by Plant Services magazine.
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![cast iron airlock rotary valve with round flange]()
BlogImmediate results for WOW. Long-term savings for ROI.
The MD Series of rotary feeder valves provides those involved in bulk material handling process engineering, production supervision, and equipment maintenance, a material metering valve that immediately contributes tangible operating efficiency advantages, and long-term production and maintenance savings.
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![rotary airlock valve with round flange]()
BlogHow to get 3x more material throughput
Find out how our CDC-CI Series handles very high-volume material throughput.
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![SD Series valve by ACS Valves]()
BlogNeed more pocket-fill capacity? More CFM?
SD Series of rotary valves is designed to provide increased bulk material throughput efficiency in feeding and metering applications
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![rotary airlock valve with round flange with return side vent port]()
BlogMaking hard-to-convey materials much easier
Get optimal bulk density and throughput of hard-to-convey materials that can easily over-aerate and reduce material feed efficiency.
