The 9-19 Industrial Blower particularly which is a high-efficiency centrifugal fan meticulously engineered to handle high-pressure, continuous airflow operations in industrial applications. Designed and manufactured by Senotay - Hebei OuTai Environmental Protection Equipment Co., Ltd. , this blower is commonly used as a boiler induced draft (ID) fan and forced draft (FD) blower for heavy-duty industrial systems.
The 9-19 Series Centrifugal Blower is a high-pressure industrial draft fan engineered specifically to overcome severe system backpressures in boiler systems, industrial kilns, and metallurgical furnace operations. Built around a narrow, deep-shrouded impeller with reinforced forward-curved steel blades, it maintains high-velocity air movement without aerodynamic stall in high-resistance piping. Designed for continuous industrial duty, it handles gas flow rates up to 109,000 m³/h and total pressures up to 12,500 Pa, operating reliably at baseline temperatures up to 250°C and extending up to 450°C when fitted with liquid-cooled bearing housings.
9-19-8C | Heavy Furnace & Ash Handling System
Flow Rate: 31,500–36,850 m³/h | Pressure: 4,400–4,800 Pa | Power: 30.0–55.0 kW | Drive: Belt Drive (Type C)
Engineered for metallurgical smelting furnaces, cement plant preheaters, and boiler ID loops.
9-19-12D | Mega-Flow Thermal Plant Air System
Flow Rate: 109,150 m³/h | Pressure: 4,585 Pa | Power: 90.0 kW | Drive: Coupling Drive (Type D)
High-capacity system built for utility power stations, large-scale kiln combustion, and primary boiler air.
Continuous volumetric output from 1,500 to 109,000 m³/h across total pressures from 1,900 to 12,500 Pa.Available in direct, V-belt, and flexible-coupling connections driven by 1.5 kW to 90 kW motors (rotational speeds from 730 to 2,900 rpm).Fabricated from Q355B/16Mn plate steel with 40CrNiMo7 alloy shafts, NSK/SKF bearings, graphite/high-temp seals, and full ISO 9001:2015, CE, and AMCA-compliant designs.
High-Pressure Reliability: Specifically engineered for continuous-duty boiler Induced Draft (ID) and Forced Draft (FD) applications. Its narrow, heavy-shrouded impeller geometry maintains airflow against high backpressure that would stall standard ventilation fans.
Extreme Heat Tolerance: Standard operation handles up to 250°C, and it is capable of operating up to 450°C when configured with liquid cooling for severe-duty metallurgical and kiln applications.
Heavy-Duty Construction: Built with thick-gauge plate steel and exterior structural rib reinforcements to prevent casing distortion under maximum internal pressure cycles, ensuring longevity.
Vibration-Free Stability: Features precision G2.5 balanced assemblies that eliminate axial drift, protecting the bearings and extending the motor's lifespan during continuous runs.
Tailored Engineering & Support: Comes with direct engineering consultation for pressure-drop and fluid dynamics calculations, plus guaranteed factory access to wear components and remote troubleshooting.
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Certified & Compliant
ISO 9001 and CE certified.
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Component | Material | Property | Standard Compliance |
Housing / Casing | Q355B Steel | High tensile & anti-corrosion | EN 10025-6 / ISO 6506-1 |
Impeller | Alloy Steel | Dynamic balance & fatigue-resistant | ISO 1940 |
Shaft | 40CrNiMo7 | High torsion endurance | ISO 286-2 |
Bearings | NSK/SKF | High load & long-life lubrication | ISO 10816 |
Cooling Method | Forced liquid cooling | For high-temp applications | ISO 12953 |
Surface Coating | Epoxy coated finish | Corrosion & heat resistant | ASTM D4541 |
Model | Drive Type | Impeller Dia (mm) | Speed (RPM) | Airflow (m³/h) | Pressure (Pa) | Motor Power (kW) |
9-19-3.2A | Direct Drive | 320 | 2900 | 1,525–3,135 | 2,267–2,500 | 1.5–3.0 |
9-19-4A | Direct Drive | 400 | 2900 | 3,375–6,270 | 2,225–2,537 | 3.0–5.5 |
9-19-5A | Direct Drive | 500 | 2900 | 6,685–11,870 | 2,905–3,375 | 5.5–11.0 |
9-19-6C | Belt Drive | 630 | 1,450 | 17,550 | 4,325 | 22.0 |
9-19-8C | Belt Drive | 800 | 1,450 | 31,500–36,850 | 4,400–4,800 | 30.0–55.0 |
9-19-10D | Coupling Drive | 1,000 | 960 | 69,250 | 4,875 | 75.0 |
9-19-12D | Coupling Drive | 1,250 | 730 | 109,150 | 4,585 | 90.0 |
9-19-6 | Direct Drive | — | 1,450–2,900 | 1,500–13,500 | 800–1,800 | 2.2–11 |
9-19-10 | Direct Drive | — | 1,450–1,800 | 10,000–70,000 | 1,100–2,000 | 15–30 |
9-19-12 | Direct Drive | — | 1,450–1,800 | 30,000–85,000 | 1,200–2,200 | 30–75 |
Physical Dimensions | Performance Ratings | Material & Construction | Operational Data | Certifications & Lifecycle |
Overall Length: 980–1980 mm | Airflow Capacity: 1,500–42,800 m³/h | Q345 / 16Mn | 3–55 kW | 30,000–45,000 hrs |
Overall Width: 720–1580 mm | Total Pressure: 1,900–12,500 Pa | Carbon Steel (Q235) | 1450–2900 rpm | ISO 9001:2015 Certified |
Overall Height: 860–1720 mm | Operating Temp: ≤ 250°C | 40Cr Steel | ≤ 85 dB(A) | CE Certified |
Flange Diameter: Φ260–Φ620 mm | Max Temp (with cooling): 450°C | Graphite / High-Temp Seal Rings | Oil Bath / Grease | AMCA-Compliant Design |
(BCD): Φ220–Φ580 mm | Pressure Rating: 0.8–1.5 Bar | 4–12 mm | 210–980 kg | Every 3,000 hrs |
Mounting Hole: 4–12 Holes (Φ12–Φ22 mm) | Efficiency: 78–86% | High-Temp Epoxy (120–180 μm) | ≤ 4.5 mm/s | Unlimited / Continuous Duty |
The 9-19 blower operates on the centrifugal force principle.
Air Inlet: Air enters through the inlet at the center of the impeller.
Centrifugal Acceleration: As the impeller rotates, it accelerates the air radially outward.
Kinetic-to-Pressure Conversion: The increasing velocity converts kinetic energy into static pressure within the volute casing.
Outlet Flow: The compressed air is discharged through the outlet, ensuring consistent flow for combustion, ventilation, or material conveyance.
This design provides steady, balanced airflow even under varying pressures, making the 9-19 High Pressure Centrifugal Fan efficient and reliable for continuous operation.
High pressure capability up to 1,800 Pa
Operational temperature up to 450°C
Efficiency rating above 90%
ISO 9001 & CE certified build quality
Noise level below 75 dB(A)
Flexible mounting options: Direct, belt, or coupling drives
Long lifespan – up to 35,000 working hours with minimal maintenance
Core Components
Impeller: Aerodynamically optimized blades for balanced airflow.
Casing / Volute Housing: Designed to minimize energy loss and maximize pressure recovery.
Motor & Drive Options: Available in direct, belt, or coupling-drive methods.
Bearings & Shafting: Precision-aligned, vibration-free operation.
Inlet & Outlet Ducting: Smooth, resistance-free integration with system piping.
Sealing & Cooling Units: Dual mechanical seals and liquid-cooled housing for enhanced longevity.
The 9-19 Industrial Blower supports multiple installation configurations based on space and operating conditions:
Flange-mounted or Base-mounted setup for stable operation.
Horizontal or vertical alignment depending on duct direction.
Vibration isolation pads or anchors recommended for stability.
Motor Drive Alignment verified before commissioning to prevent wear.
Senotay provides on-site installation guidance and after-sales technical support for optimal system performance.
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Q1. What is the main application of the 9-19 High Pressure Centrifugal Fan?
Answers:It is primarily used as a Boiler Induced Draft (ID) Fan or Forced Draft (FD) Fan in boilers, kilns, and industrial ventilation systems.
Q2. What materials are used in Senotay’s 9-19 Industrial Blower?
Answers:We use Q355B high-strength steel, alloy impeller blades, and carbon steel shafts to ensure durability and reliability under high pressures and temperatures.
Q3. Can the blower be customized for special applications?
Answers:Yes, customization options include corrosion-resistant coatings, stainless steel structure, variable speed drives (VFD), and dual cooling circuits for higher temperature demands.
Q4. Is the 9-19 blower energy-efficient?
Answers:Absolutely. The blower achieves over 90% efficiency, reducing energy consumption in high-resistance environments.
Q5. What certifications does the 9-19 blower comply with?
Answers:It meets ISO 9001:2015, CE, and AMCA quality and safety standards.
Q6. What is the typical service life?
Answers:With proper maintenance, the service life exceeds 35,000 hours or about 5 years of continuous use.