Airlocks

Rotary Airlock Valve Feeders manufactured by Prater are designed to provide improved performance to bulk material processing and production operations. In dry material metering applications, our valves ensure accurate material loading and unloading while also functioning as highly efficient rotary airlocks; minimizing pressure loss throughout the system.

Abrasion Resistant Rotary Airlock

Abrasion Resistant Rotary Airlock

Our Abrasion Resistant Rotary Airlock is considered our most durable rotary valve as it is most frequently chosen to handle highly abrasive products.

 

Abrasion Resistant

Blow-Thru Rotary Airlock

Blow-Thru Rotary Airlock

Our Blow-Thru Rotary Airlock Valves are designed and manufactured specifically for applications that require discharging into a pneumatic conveying line.

Blow-Thru

Dust Collector Rotary Airlock

Dust Collector Rotary Airlock

Our Dust Collector Series Rotary Airlock is a budget-friendly, economical rotary airlock feeder; choice for general use under dust collectors, cyclones and hoppers.

Dust Collector

Heavy Duty PAV Rotary Airlock

Heavy Duty PAV Rotary Airlock

Our Heavy-Duty (PAV) Series Rotary Airlock is an ideal rotary valve choice for handling many dry, free-flowing powders where a pressure differential exists.

 

Heavy Duty PAV

Quick Take Apart Rotary Airlock

Quick Take Apart Rotary Airlock

Our Quick-Take-Apart (QTA) Series Rotary Airlock was designed specifically for applications where frequent removal of the rotary valve internals is necessary such as “Clean in Place” systems.

Quick-Take-Apart

 

Quick Take Apart Rotary Airlock on Rails

Quick Take Apart Rotary Airlock on Rails

Our Quick-Take-Apart Rail Series Rotary Airlock has a unique design with three times more load capacity than most other manufacturers’ rotary feeder valves. The rail design protects the rotor from dropping in awkward locations and allows for quick reassembly to maximize up-time.

Quick Take Apart Rails

Sanitary Rotary Airlock Valve

Sanitary Rotary Airlock Valve

Our Sanitary Rotary Airlocks are constructed from high quality stainless steel and they contain cutting-edge design features that allow for easy tool-less access for maintenance and sanitation.

Sanitary Airlock

 

Hammer Mills

Prater continues to provide solutions for some of the most demanding processing challenges with our innovative designs, industry expertise and advancements that provide a shorter wait for your business’ return on investment. Our Hammer Mills are commonly used for many different particle reduction applications, including those that require high capacities, extreme power efficiency, and uniform particle size. With a Prater hammer mill, you can increase the mill’s throughput capacity without having to increase its power requirements. Companies both large and small rely on Prater for efficient milling solutions and proven expertise.

Full-Screen Hammer Mill

Full-Screen Hammer Mill

Our Full Screen design is a proven system that ensures maximized use of the entire available screen area to enhance end product quality and equipment productivity.

Full Screen

 

Mega Mill

Mega Mill

Our Mega Mill Hammer Mill provides uniform grinding with less heat build-up, as well as a bearing and shaft arrangement that ensures a smoother and quieter operation.

 

Mega Mill

Lump Breakers

Lump breakers, also referred to as lump crushers, are required particle size reduction equipment for most material handling systems. They operate by introducing agglomerated product through an opening in the top of the unit. The lump breaking happens when the products particles that are too large are crushed by the rotating blades as they pass through a set of stationary comb-like blades. The agglomerated product particles continue to be reduced in size until they are small enough to pass through and discharge below the unit. A common application for our lump breakers is to reduce deliberately compacted materials or natural agglomerations which often occurs during production, storage or shipping.

Lump Breaker

Lump Breaker

This uniquely designed lump breaker (cake breaker/flake breaker) improves product flow for a variety of applications while reducing product agglomeration for an all-around easy means of reducing compacted materials.

Lump Breaker

 

Quick Clean Lump Breaker

Quick Clean Lump Breaker

Our engineers have designed and manufactured a Lump Breaker that is easier and safer to clean and maintain than traditional lump breakers.

 

Quick Clean

Size Reduction

If your application needs reduction, whether 6-inch to sub-micron size, choose from Prater’s superior fine grinders, air classifying mills, hammer mills, and lump breakers to meet all of your industrial processing needs. 

M Series Fine Grinders

M Series Fine Grinders

The “M” Series fine grinders are designed to grind dry, free-flowing material down to 400 mesh with extremely tight particle size distribution. This highly efficient machine ensures easy access to all internal areas and is perfect for heat-sensitive materials, such as resins, sugars, and powder coatings.

M Series

 

Vibratory Screens

Vibratory Screens

 

The Prater Vibratory Screener is a heavy-duty, mechanical machine that separates particles into multiple size fractions, removes oversized particles or foreign material, removes fines from a process stream, or segregates excess liquid from finished products.

 

Vibratory Screens