Rotary Airlocks

rotary air locksPrater’s rotary valves can easily be configured to fit most application requirements. We manufacture custom-built rotary airlocks with larger pockets, allowing up to 50% more volume, to enable them to run at lower speeds. Our innovative design means minimum air leakage, a longer life and a higher return on your investment. After years of engineering and manufacturing rotary airlocks, we consider ourselves proven experts on the various rotary airlock designs available to our customers. Prater- Sterling understands that temperature, pressure, size and construction plays a very significant role in processing various materials, which is why all of our rotary valves are carefully machined for those unique specifications. Each of our rotary airlocks can be individually customized to your exact processing specifications to ensure a reliable, worry-free operation that meets your precise needs.

As custom manufacturers of rotary airlock feeders; Prater is dedicated to offering the highest-quality rotary airlock options to ensure the appropriate feeding, metering and control of materials.

Rotary Airlock Case Studies

You may contact Prater and discuss your rotary airlock application with one of our airlock sales consultants. They can quickly help you select the best rotary airlock for your operation and customize with specific options to meet your processing requirement.

Ceramic Series Airlock:

Our Ceramic Series rotary airlock is considered our most durable valve as it is most frequently chosen to handle highly abrasive products.

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Dust Collector Series Airlock:

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

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Heavy Duty PAV Series Airlock:

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

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Quick Take Apart Series Airlock:


Our Quick-Take-Apart (QTA) Series rotary airlock was designed specifically for applications where frequent removal of the valve internals is necessary.

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Quick Take Apart Series 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’ airlocks. The rail design protects the rotor from dropping in awkward locations and allows for quick reassembly to maximize uptime.

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