Heavy-Duty Rotary Valve Airlock with Tool Steel Knife

Engineered for Tough Materials Including Wood Chips, Waste, Pulp, Rubber & Plastics

Precision Machine & Manufacturing’s Heavy-Duty Rotary Valve Airlock with a Hardened Tool Steel Knife is built to tackle the industry’s most demanding material handling challenges. Designed for maximum durability, performance, and uptime, this rugged rotary valve airlock sets the standard for reliability in abrasive and fibrous material applications.

From wood chips, sawdust, and bark to pulp, plastics, rubber, and biomass fuels, this heavy-duty rotary valve ensures consistent throughput and optimal flow control. Its stationary, hardened tool steel knife works in tandem with a precision-machined helical rotor to shear oversized materials, maintaining uniform particle size and reducing the risk of clogging or system damage.

Key Features:

  • NFPA 69 & 85 compliance upgradeable if/when an application requires.

  • Hardened tool steel knife shears fibrous and oversized material on contact

  • Heavy-duty construction for continuous operation in harsh environments

  • Rebuildable Modular design for easy onsite maintenance and factory rebuilds.

  • Tight Rotor-to-Housing Clearances: Ensures precision airlock functionality and metering accuracy

Don’t settle for inferior airlocks that clog, jam, or wear out.

Install a PMM Heavy-Duty Rotary Valve Airlock with Tool Steel Knife and experience reliable performance, superior material control, and long-term durability across your toughest applications.

Contact Precision Machine & Manufacturing today to configure a rotary airlock feeder that meets the unique demands of your material handling system.

Ideal for Handling:

  • Wood Chips & Wood Waste

  • Pulp & Paper Residue

  • Biomass & Alternative Fuels

  • Rubber & Plastics

  • Organic & Fibrous Materials

Whether installed in a pneumatic conveying system, fuel metering station, or dust collection system, this rotary feeder excels at shearing and sizing materials before they enter downstream processing or combustion systems. The tool steel knife is especially effective for conditioning fibrous or irregular feedstock, improving equipment longevity and throughput.

Industry Applications:

  • Lumber & Wood Products: Planer shavings, hog fuel, sawdust

  • Pulp & Paper Mills: Wet pulp, recycled fiber, trim waste

  • Renewable Energy: RDF, wood pellets, biomass fuels

  • Recycling & Waste Recovery: Shredded rubber, plastic scrap

  • Agriculture & Organic Material Processing