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Rotary Airlock Feeder

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JR Airlock Feeder
Jeffrey Rader Brand’s Rotary Airlock Feeders are industry-leading solutions designed for feeding material into high/low-pressure pneumatic conveying systems and boiler feed systems. With a heavy-duty rotor and shaft assembly, top knife for shearing material at the infeed, anti-dusting baffle, adjustable brass sealing rings, and a one-piece alloy shaft, these feeders ensure efficient and reliable operation. Thousands of these feeders have been built and installed globally, attesting to their exceptional quality and performance. Whether you need to minimize air and pressure loss in high-pressure conveying lines or manage infeed/outfeed airlocks in low-pressure systems, Jeffrey Rader’s Rotary Airlock Feeders offer unmatched durability, precision, and cost-effectiveness.


  • Dual top knives for effective shearing
  • Variable speed control
  • Anti-stall capabilities
  • Double-helical rotor with a labyrinth seal
  • Adjustable end seals
  • Polished rotor surfaces to prevent material build-up
  • Optional stainless-steel components
  • Anti-jamming mechanism with automatic reversal
  • Optional accessories like custom transitions and sight glasses


  • Precise volumetric feeding of polypropylene and polyethylene resin under high pressures and temperatures
  • Uninterrupted operation in rugged applications
  • Continuous, efficient performance
  • Reliability and precision in material handling
  • Accurate metering
  • Controlled rotational speed for precise feeding
  • Easy maintenance with adjustable knives and seals
  • Ability to clear jams and alert operators
  • Optional features for customized applications, such as different housing materials and drive types.


Agricultural/Food Processing  •  Biofuels & Pellets Production  •  Biomass Energy Processing  •  Cement Production  •  Petrochemical Processing
Pulp & Paper Manufacturing  •  Recycling Operations  •  Renewable Power Production  •  Sawmill Operations
Waste Management  •  Wood Products / Furniture Manufacturing


Our Industrial Feeding Solutions Video
Jeffrey Rader Pneumatic Conveying Systems Video
Forest Products Processing and Handling Solutions Video