Gardner Denver engineers dry bulk blower solutions for the full range of pneumatic conveying demands — from standard tank truck loading to high-pressure, high-altitude, and noise-sensitive applications. Three core technologies. One manufacturer. Unmatched application coverage.

Which Technology Is Right for Your Application?

Gardner Denver offers three distinct dry bulk blower technologies — each optimized for a different balance of pressure, weight, noise, and operating cost.

Bi-Lobe Blowers

The high-volume workhorse. Best for wide-range material handling — cement, sand, grains, pebble lime. Proven bi-lobe construction with the broadest flow range in the portfolio.

Helical Screw Compressors

The efficiency play. Lighter, quieter, and more fuel-efficient than straight-lobe alternatives. Choose screw when payload capacity and operating costs drive the decision.

Oil-Free Rotary Vane

The precision option. Coolest discharge temperatures, lowest noise, 100% oil-free output. Built for contamination-sensitive materials and compact trailer configurations.

Already Know What You Need?

Our specialists will match your pressure requirements, material type, flow capacity, and trailer configuration to the right solution — and connect you with your nearest distributor.

Bi-Lobe Technology

High-Flow Capability Across the Full Material Range

Bi-lobe blowers generate high-volume, low-pressure airflow through two synchronized counter-rotating lobes — moving material efficiently without contact between rotors or housing. The design is robust, field-serviceable, and adaptable to virtually any dry bulk material.

Gardner Denver bi-lobe blowers are built for the pressure and flow demands of tank truck loading and unloading, with cast iron construction, bi-rotation capability, and a flow range that covers the broadest set of applications in the industry.

Best suited for: Cement, fly ash, sand, pebble lime, cereal grains, fodder, sugar, plastic pellets.
Helical Screw Technology

Less Weight. Less Noise. Lower Cost Per Run.

Helical screw compressors replace the straight-lobe design with interlocking helical rotors, delivering a smoother compression cycle that generates less vibration, less heat, and significantly less noise. The result is a blower that weighs less, uses less fuel, and extends payload capacity on every trip.

Gardner Denver is the only manufacturer bringing rotary screw technology to truck blowers — an innovation that has measurably changed operating economics for dry bulk fleets worldwide.

Key differentiators:

  • 3–12 dBA quieter than straight-lobe alternatives
  • Up to 40% faster discharge times
  • Up to 27% less power consumption
  • Lightest units in their class — maximizing payload per trip
Oil-Free Rotary Vane Technology

Maximum Purity. Minimum Footprint.

Rotary vane blowers use spring-loaded vanes that extend from a rotor to compress air against the housing wall — producing 100% oil-free output with the coolest discharge temperatures and lowest noise levels of any truck blower technology. Their compact form factor makes them the right choice for trailers with limited space or strict air quality requirements.

No discharge silencer required. Lower initial cost. Ideal for lease operators, multi-application fleets, and any application where contamination cannot be risked.

Best suited for: Cement, lime, gypsum, dry bulk chemicals, and any material requiring oil-free air delivery.

Built for How You Work

Gardner Denver dry bulk solutions are deployed across the full range of pneumatic conveying environments — from high-throughput bulk terminals to single-truck lease operations. Find the solutions built for your operating context.

Find the Right Blower for Your Application

Filter by technology, pressure range, and flow capacity to identify the right model for your spec.