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Roots RCS Series
The Rotary Centrifugal Style (RCS) represents Roots' largest industrial PD blower, featuring three rotating lobes that deliver higher flows with lower speed. Available in 3 frame sizes (817, 824, 827), RCS units operate from 4,050 to 4,650 ICFM at pressures to 18 PSIG and vacuums to 16 in.Hg. Built with integral-shaft ductile iron impellers, rigid cast-iron casing, and carburized spur gears, RCS blowers handle the most demanding continuous-duty industrial applications.
New to Roots blowers? See our Industrial Rotary Lobe Blower overviewRCS Models (3)

Roots RCS 817
Rotary Centrifugal Style tri-lobe heavy-duty blower for large-displacement, high-flow industrial applications
4,050 ICFM at 18 PSIG
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Roots RCS 824
Rotary Centrifugal Style tri-lobe heavy-duty blower for large-displacement, high-flow industrial applications
4,460 ICFM at 15 PSIG
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Roots RCS 827
Rotary Centrifugal Style tri-lobe heavy-duty blower for large-displacement, high-flow industrial applications
4,650 ICFM at 13 PSIG
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RCS Series Specifications
- Capacity Range
- 4,050–4,650 ICFM across frame sizes 817–827
- Max Pressure
- 18 PSIG
- Max Vacuum
- 16 in.Hg
- Max Speed
- 2250 RPM
- Connection Sizes
- 10 in. to 14 in. flange depending on frame size
- Gearing
- Carburized and ground alloy steel spur gears
Typical Applications
- Large wastewater treatment aeration
- Industrial vacuum and pressure boosting
- High-capacity pneumatic conveying
- Biogas and landfill gas handling
- Thermal oxidation air supply
- Large-scale continuous industrial duty