Heavy-Duty Rotary Valve Airlock

NFPA-Upgradeable | Abrasion-Resistant | Rebuildable for Long-Term ROI

Precision Machine & Manufacturing’s Heavy-Duty Rotary Valve Airlock is built to outperform traditional cast iron airlocks in powdered and granular material handling applications. Designed for high-volume, high-abrasion environments, it delivers unmatched sealing performance, durability, and low maintenance functionality across demanding industries.

Revolutionizing the industry and setting a new standard: The first rotary valve airlock constructed with high-wear, quick-swap components to simplify maintenance and maximize uptime. Rebuild vs. Replace!

Engineered to Move the Most Abrasive Materials:

  • Cement, fly ash, lime, and mineral powders.

  • Plastic pellets, resins, pigments, and dry chemicals.

  • Grain, DDGs, and feed mill byproducts.

  • Outlasts Cast Iron Airlocks 3–5x: 100% Rebuildable! Proven track record of outperforming cast-iron.

  • Proven track record in high temperature applications up to 800 degrees.

  • Modular construction enables minimal downtime.

Contact PMM now to upgrade your material handling system with the industry’s toughest rotary valve airlock!

Key Features:

  • NFPA-Upgradeable: Configurable to meet NFPA 69 & 85 compliance if/when needed.

  • Abrasion-Resistant Steel Alloys: Surface hardness up to 60 Rockwell.

  • Precision Rotor-to-Housing Fit: Tight tolerances reduces air leakage and increase efficiency.

  • Unique Proprietary Modular Design: Minimizes downtime and enables quick onsite maintenance.

  • Outlasts Cast Iron Airlocks 3–5x: Proven durability in abrasive application.

  • Rebuild vs. Replace! Significantly lowers cost of ownership over the product’s lifecycle.

Industry Applications:

  • Cement & Aggregates: Clinker, limestone, kiln dust.

  • Power Generation: Fly ash, bottom ash, pulverized fuels.

  • Bulk Powder Processing: Soda ash, lime, calcium carbonate, pigments.

  • Grain & Feed Mills: Corn, soy, DDGs, pelleted material.

  • Plastics & Resins: Pellets, powder resins, and compounds.