Rotary Airlock Valves

Prater rotary airlocks and valves

Rotary Airlock Valves are a type of rotary feeder and are often referred to simply as a Rotary Airlock or Rotary Valve. They provide feeding and metering functionality of a standard rotary feeder but their primary duty is to maintain pressure and provide an optimal airlock seal between different product conveying transitions, such as gravity to pneumatic conveying lines. An optimal airlock condition is essential to prevent air pressure loss in high pressure and high temperature conveying systems.

Rotary Airlock Prater Rotary Airlocks are used worldwide throughout a large variety of industrial and agricultural bulk and specialty material handling systems. We specialize in the design and manufacture of custom built rotary airlock products that can immediately improve the safety, reliability and efficiency of your feeding and metering operations compared to other rotary valve brands.

Why choose a Prater Rotary Airlock?

After years of engineering and manufacturing rotary airlocks, we consider ourselves proven experts on the various rotary airlock and valve designs available to our customers. We understand that temperature, pressure, size and construction plays a very significant role in processing various materials which is why all of our rotary airlock valves are carefully machined for those unique specifications. Each of our rotary airlocks can be individually customized to your exact processing specifications to ensure optimal, reliable and worry-free operation that meets your precise needs.

NFPA-69 Compliance Tested and Passed

In February of 2015 Prater Rotary Airlocks were tested at the Fike® Remote Testing Facility according to guidance found in NFPA-69. Fike® concluded that Prater Rotary Valves were structurally sound, exhibited no visually observable plastic deformation in any test and successfully isolated the protection region from flame propagation.

Our airlocks have an innovative larger vane pocket design that allows up to 50% more volume which enables the rotor to run at lower speeds than other manufacturers’ rotary airlock and valve feeders. Pair this with our exclusive self-adjusting packing glands and you have a rotary airlock valve that provides minimum air leakage, a longer life, less maintenance and a higher return on your investment.

Other standard features such as our precision casting, CNC machining, compact design and universal mounting flanges allow for a versatile material handling rotary airlock valve product that can fit virtually every existing bolt hole pattern and replace any existing rotary valve.

If you have a need for a rotary feeder, please consider the added “airlock” benefit of a Prater Rotary Airlock Valve. We are confident that we can help improve your bulk material handling and conveying efficiency.

Contact Prater today and discuss your airlock application with one of our rotary airlock account managers. They can quickly help you select the best rotary airlock for your application and recommend specific options to meet your processing requirements.

Keep up the pressure on your processing systems and competition with the help of a rotary airlock from Prater. We are dedicated to offering the highest-quality rotary airlock product and options to ensure the appropriate feeding, metering and control of materials.

Rotary Airlock Case Studies

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Prater Rotary Airlock Valve Products

Abrasion Resistant Rotary Airlock:

Abrasion Resistant Rotary Airlock Valve

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

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Blow-Thru Rotary Airlock:

Prater Blow-Thru Rotary Airlock Valve

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

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Dust Collector Rotary Airlock:

Dust Collector Rotary Airlock Valve

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

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Heavy Duty PAV Rotary Airlock:

Heavy Duty Rotary Airlock Valve

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.

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Quick Take Apart Airlock:

Quick Take Apart Rotary Airlock Valve

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.

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Quick Take Apart Airlock on Rails:

Quick Take Apart Rotary Airlock Valve 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.

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