Raw Mill Rotary Feeders,
Alternative Fuel Rotary Airlocks
& Dust Collection Airlocks

Only the strongest, most robust material handling components can be
counted on when it comes to moving material throughout a Cement
Manufacturing plant! It is for this reason why we build the highest
quality and most durable Rotary Airlock Feeders in the industry!
Whether we are called upon to move massive amounts of clinker or
limestone, are a part of an alternative fuel system moving materials such
as lignite coal, rubber, and carpet or deployed as part of a dust-collection
system. Rest assured that our Rotary Airlock Feeders will out perform
any other material handling component. GUARANTEED!

CEMENT MANUFACTURING

Heavy Duty Rotary Airlock Feeders for the Cement Manufacturing Industry

Precision Machine & Manufacturing is the Cement Manufacturing Industry’s preferred Rotary Valve Airlock manufacturer! PMM’s robust, high-volume Raw Mill Rotary Airlock Feeders are commonly used for conveying limestone into the raw mill delivery system and like all of PMM’s Airlocks are equipped with the industry’s tightest rotor to housing clearances, which maximizes the airlock functionality. In addition, PMM’s Heavy-Duty Rotary Airlocks can be found in a variety of material handling applications throughout the plant’s operation including the cogeneration power plant moving lignite coal, rubber, and/or other alternative fuels, under baghouses, blending cyclones, and within dust collection systems.

Every component is 100% Made in the USA!

High Volume Raw Mill, Clinker & Limestone

Raw Mill Rotary Airlock Feeder

Able to process up to 800 tons per hour, while keeping the mill at a consistent 250 degrees Fahrenheit. The heavy duty raw mill rotary airlock feeders are the most robust, durable and functional airlock on the market today.

High-Volume Granular, Powdery & Ash Materials

Double Slope Rotary Airlock Feeder

Coal and pet coke continues to be a common fuel source and this heavy duty rotary airlock feeder is built to withstand the abrasive nature of these materials and move massive amounts of it!

Wood, Organic and Alternative Fuel Materials

Rotary Airlock Feeder w/Knife

A perfect heavy duty airlock for alternative fuels! Regardless of the type of material, whether it is shredded tires, carpet, plastic, or wood waste, this heavy-duty rotary feeder with a hardened tool steel knife, is a game changer!

NFPA Compliant-Perfect for Granular & Powdery Materials

Extreme Duty Rotary Valve Airlock

The heavy duty rotary valve airlock is in a class of its own due to its industry leading, ultra tight rotor to housing clearances and abrasion-resistant materials. Perfect for dust collection systems or moving powdery or small granule materials.

The Ideal Solution for Low-Quality Coal Applications

Self-Cleaning Rotary Valve Airlock

The heavy duty self-cleaning rotary valve is the perfect metering airlock to replace maintenance heavy coal grinding mills or when using lignite coal as an alternative fuel source. Perfectly designed to move materials that are subject to sticking and packing.

When Only the Very Best Will Do!

Heavy-Duty Screw Conveyors

PMM builds heavy duty augers able to effectively handle the temperature and abrasiveness of the materials being used in the cement manufacturing process. Commonly used to replace inferior light duty screw conveyors.

CEMENT
MANUFACTURING

Rotary Airlock Feeders

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Eliminate Triple Flap Gate Valves! Triple flap gate valves are maintenance heavy, innefficent due the amount of air allowed to pass through, and expensive to operate in terms of the constant upkeep and downtime of the raw mill material handling process. Replace these components with a Raw Mill Rotary Airlock Feeder from Precision Machine & Manufacturing and move those triple flap gate systems to the scrap yard where they belong!
Replace cheaply made cast-iron airlocks! Cheap cast-iron airlocks were never made to hold up to the abrasive materials moving through a Cement Manufacturing plant. This is why most newly installed cast-iron airlocks will begin to show their true colors within 6-months from the date of installation, which is when the inefficiency starts and the daily maintenance cleanouts begin. PMM's Rotary Valve Airlocks will outlive cheap cast-iron airlocks 3 to 1!!
Don't replace bad with bad! When the original conveying and/or material handling system was designed and installed by companies like "Schen..," they did not source the highest quality product for the system because it would drive up the overall cost. Instead, marginal components were chosen that technically checked off the boxes, but were not the best option. As you look at replacing those original airlocks, choose a Rotary Airlock that was manufactured specifically for the Cement Manufacturing Industry.
A Rotary Valve Airlock for all occations! There are many different material handling systems operating throughout a cement plant. PMM has a Rotary Valve Airlock for all of them! PMM's Rotary Feeder is perfect for the alternative fuels cogeneration conveying line, and the Self-Cleaning Rotary Valve is the optimum solution to replace maintenance heavy Raymond coal mills in the lignite coal line. The Extreme-Duty Rotary Valve is perfect for the abrasiveness and material particle size in the dust collection system. Bottom line, PMM has an airlock that we built for your application!
Rebuildable! All PMM Rotary Airlocks are rebuildable! This provides a greater ROI over the life of the product while significantly reducing CAPEX purchases. In addition, this opens the door for PMM to deploy an "exchange" program, which ensures the plants airlocks are always functioning at peak performance.