Reduce noise, minimize pressure pulsation, and support reliable pressure and vacuum performance with Gardner Denver HeliFlow® rotary lobe blowers. Combining a proprietary helical tri-lobe rotor profile with unique triangular tuned ports, the HeliFlow Series delivers airflow up to 4,500 cfm, pressure up to 18 psig, and vacuum up to 17 inHg for demanding industrial air and gas applications.
Designed for wastewater treatment, pneumatic conveying, plastics processing, milling operations, and other industrial applications, HeliFlow blowers combine advanced rotor technology, rugged construction, and dependable sealing systems to support long-term performance and reliability.
Up to 4-7 dBA lower noise levels than comparable straight-lobe blowers, thanks to a proprietary helical tri-lobe rotor profile and tuned-port design.
Delivers pressure up to 18 psig, vacuum up to 17 inHg, and airflow up to 4,500 cfm across the HeliFlow product range.
Built with ductile iron rotors, oversized bearings, dual splash lubrication, advanced seals & precision-balanced components for reliable industrial performance.
Performance Attribute | Capability |
|---|---|
Pressure | Up to 18 psig |
Vacuum | Up to 17 inHg |
Airflow | Up to 4,500 cfm |
Product Sizes | 4", 5", 6", 8" |
Available Models | 406, 408, 412, 514, 616, 624, 817, 825 |
Lubrication | Dual Splash Lubrication |
Gas Service Option | Available on Select Models |
Warranty | 18 Months from Initial Use or 24 Months from Shipment |
Performance varies by model and operating conditions
The HeliFlow Series combines a proprietary helical tri-lobe rotor profile with unique triangular tuned ports engineered to reduce discharge pressure pulsation. The resulting smoother pulse pattern supports quieter operation, more consistent airflow performance, and improved blower reliability.
Discharge pulsation is a primary contributor to blower noise. By minimizing pressure pulsation, HeliFlow helps reduce noise levels by up to 4-7 dBA compared to similarly sized straight-lobe blower designs.
A smoother pressure-pulse profile helps reduce airflow variation throughout the system, supporting more consistent operation and helping minimize stress on downstream components.
Unlike hollow rotor designs, HeliFlow utilizes solid ductile iron helical tri-lobe rotors that help eliminate the potential for imbalance caused by material buildup within rotor cavities.
Selected models are available with a mechanical seal design engineered specifically for critical gas service applications.
Blower Design | Example Product Type | Relative Pulsation | Relative Noise Characteristics |
|---|---|---|---|
Bi-Lobe | Traditional rotary lobe blowers | Highest | Highest |
Conventional Tri-Lobe | Standard tri-lobe blowers | Lower | Lower |
HeliFlow® Helical Tri-Lobe | Gardner Denver HeliFlow® Series | Lowest pressure pulse* | Reduced noise levels* |
Based on published HeliFlow pressure-pulse and noise comparisons relative to similarly sized straight-lobe blower designs.
The HeliFlow rotor profile was developed to reduce pressure pulsation while supporting smoother airflow, quieter operation, and more consistent system performance. Combined with unique triangular tuned ports, it provides one of the lowest pressure-pulse signatures in the lobe blower market.
Key design features include:
These components work together to support long service life and dependable operation across demanding industrial applications.
The HeliFlow single-piece cylinder incorporates large external cooling fins that support heat dissipation and structural integrity. Additional cylinder mass and unique triangular tuned ports also contribute to greater strength and noise attenuation.
HeliFlow blowers utilize advanced piston-ring oil and air seals designed to support dependable sealing performance and reliable oil-free air delivery. Eight-inch models incorporate two air-side and two oil-side piston-ring seals.
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HeliFlow supports applications requiring dependable pressure, vacuum, and airflow performance while helping reduce operational noise levels.
Design Feature | Operational Benefit |
|---|---|
Helical Tri-Lobe Rotor + Triangular Tuned Ports | Helps reduce pressure pulsation for quieter operation and smoother airflow |
Solid Rotor Construction | Helps avoid imbalance associated with material buildup |
Helical Alloy Steel Timing Gears | Quiet, smooth mechanical operation |
Oversized Spherical Roller Bearings | High radial and axial load capability |
Large Diameter Shafts | Increased overhung load capability |
Dual Splash Lubrication | Supports durability and reduced maintenance intervals |
Advanced Piston Ring Seals | Dependable sealing performance |
Single-Piece Cylinder with External Fins | Supports heat dissipation and structural integrity |
ISO Grade 6.3 Dynamic Balancing | Supports smooth rotor operation |
The HeliFlow proprietary helical tri-lobe rotor profile works together with unique triangular tuned ports to reduce pressure pulsation, helping deliver quieter operation, smoother airflow, and improved reliability.
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