Feeding and Metering Solutions

Rotary Airlock and Valve Feeders are designed and manufactured to provide optimal feeding and metering performance to bulk material operations.
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Prater Rotary Feeder and Metering Products

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.

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.

ABRASION RESISTANT ROTARY AIRLOCK

Our abrasion resistant rotary airlock is considered our most durable rotary valve and is your solution to rotary airlock valves that constantly wear out in high abrasive applications.

QUICK TAKE APART 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 SERIES 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.

BLOW-THRU ROTARY AIRLOCK VALVE

The Prater Blow-Thru Rotary Airlock Valves are designed and manufactured specifically for applications that require discharging into a pneumatic conveying line. These Airlocks are ideal for free-flowing materials that require some assistance in clearing the rotor vane pockets.

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.

Our customers rely on Prater Rotary Airlock Valve Feeders to perform various functions such as:

  • Feed process materials into pneumatic conveying applications
  • Regulate the flow of material from one chamber to another
  • Measure metering of process materials in loading and unloading applications
  • Minimize air loss while transferring material between vessels with differing pressures

Prater’s Rotary Airlock Valves can be configured and customized for most application requirements, especially for materials that may be highly abrasive. We understand the need for feeding more material at lower speeds, which is why our rotary airlock feeders are manufactured with larger pockets. In turn, this design minimizes air leakage, provides the benefit of longer life, and ensures a higher return on investment.

Feeding & Metering Case Studies

Wherever dry free-flowing powders, granules, crystals, or pellets are used, our rotary valves perform well in a wide range of industry applications. Common materials include cement, ore, sugar, pigments, wood chips, minerals, grains, plastics, coal, soy white flakes, fly ash, flour, gypsum, lime, coffee, carbon black, and pharmaceuticals.

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