Large Ventilation Centrifugal Flow Fan Stainless Steel Blower Fan 380V To 10KV

This article's table of contents introduction:

1. Clarifying the Product Identity
2. Key Specifications to Define (For Your Supplier)
3. Typical Manufacturers & Supply Chain (Global & Chinese)
4. Important Technical Considerations
5. Summary Checklist for Your Inquiry

Based on your request, you are looking for a Large Ventilation Centrifugal Flow Fan made of Stainless Steel, operating on a voltage range of 380V to 10,000V (10kV) .

This is a highly specific industrial product. At this scale (high voltage, stainless steel, large flow), you are likely dealing with heavy-duty applications such as marine ventilation, chemical fume extraction, tunnel ventilation, or power plant cooling.

Here is a breakdown of what you need to know to source this correctly, including key specifications, standards, and potential suppliers.

Clarifying the Product Identity

• Configuration: "Centrifugal Flow Fan" implies it is a Centrifugal Fan (also called a radial fan). In a large industrial context, the most common types for high pressure and volume are Backward Curved (BC) or Airfoil (AF) wheels.
• Stainless Steel (SS):
  • Grade: You need to specify the grade. For ventilation (clean air), SS304 is standard. For corrosive or acidic fumes (chemical plants, labs), you require SS316 or Duplex SS (e.g., 2205) .
  • Construction: The entire housing, impeller, inlet cone, and shaft sleeve must be SS. The shaft itself is usually SS or plated steel to prevent rust.
• Voltage Range (380V to 10kV):
  • This indicates the fan is driven by an Electric Motor. You will not find a single motor that runs on both 380V and 10kV. The fan housing is the same, but the motor changes.
  • 380V: Standard low-voltage motor (typically up to 300-400 kW).
  • 10kV (10,000V): High-voltage motor (used for very high power, e.g., 500kW to 5MW+). This requires specialized switchgear and cable terminations.
  • Translation: You need two separate SKUs (Stock Keeping Units) or to specify the exact motor voltage you require.

Key Specifications to Define (For Your Supplier)

When contacting a manufacturer, provide the following details to ensure the right product:

• Airflow (Volume): m³/h or CFM (e.g., 50,000 m³/h or 300,000 CFM).
• Pressure (Static or Total): Pa or in.wg.
• Gas Temperature: (e.g., Ambient 20°C, or High temp 150°C).
• Material: SS304, SS316L, or Duplex.
• Motor Data:
  • Voltage: Specifically 380V OR 10kV (or specify a range like "380V/660V").
  • Frequency: 50Hz or 60Hz.
  • Speed: (e.g., 1450 RPM, 980 RPM, or driven by VFD).
• Application: (e.g., Marine, Chemical Exhaust, General Ventilation).

Typical Manufacturers & Supply Chain (Global & Chinese)

Finding a 10kV stainless steel blower is a niche product. Mainstream HVAC suppliers (e.g., Greenheck, Twin City) usually cap at 690V. For 10kV stainless steel, you must go to heavy industrial fan manufacturers.

Global Leaders (High Quality, High Cost)

• Howden (UK/Global): Specializes in heavy-duty, high-voltage (up to 13.8kV), stainless steel fans for power and marine.
• FLSmidth / Airtech (Denmark/Global): Renowned for large centrifugal fans for cement and mining, can build in SS for corrosive environments.
• Novenco / Volution (Marine Focus): Specifically makes large, high-pressure, stainless steel centrifugal fans for marine (HVAC and Engine Room) often with 440V, 690V, or 3.3kV (not common for 10kV marine).

Chinese OEM Manufacturers (Lower Cost, High Volume)

Many Chinese factories specialize in building large, explosion-proof, and stainless steel fans for export. They can easily offer 380V and 10kV options (10kV motors are very common in Chinese heavy industry). Look for:

• Zibo Ruifeng Jixie (Shandong): Known for high-pressure industrial fans.
• Shanghai Yileng (Shanghai): General industrial blower factory.
• Shenyang Blower Works (SBW) (Shenyang): A state-owned legacy factory that builds massive fans (often for power plants), can handle 10kV easily.
• Zhejiang Sanfeng (Zhejiang): High-quality specialty fan maker for marine and chemical.

Important Technical Considerations

• High Voltage (10kV) Safety: Ensure the fan has a proper grounding lug. The motor terminal box must be rated for 10kV (typically larger than a 380V box). The fan frame must be bonded.
• Impeller Design: For a stainless steel centrifugal fan at high pressure, the impeller is usually welded (not riveted). Backward curved blades are standard for high efficiency.
• Balance: At high speed (e.g., 2900 RPM for a large fan), balance must be G6.3 or better (preferably G2.5) to avoid vibration damage.
• Corrosion Resistance: Ensure the fasteners (bolts, nuts) are also SS316. If the environment is acidic, consider a coated shaft or sealed bearings to prevent vapor ingress.

Summary Checklist for Your Inquiry

To get a quotation, send the manufacturer this brief:

Subject: Inquiry for Stainless Steel Centrifugal Fan – 380V & 10kV models

Body:

1. Model: Large Ventilation Centrifugal Fan.
2. Material: Full Stainless Steel (Specify grade: e.g., SS316L).
3. Airflow: [e.g., 80,000 m³/h].
4. Pressure: [e.g., 2500 Pa].
5. Motor: [e.g., 380V/50Hz/3Phase] AND [e.g., 10kV/50Hz/3Phase].
6. Accessories: Inlet box, silencer, VFD coupling (if needed).

Please provide:

• CAD drawing or catalog for similar model.
• Weight, dimensions, sound level.
• Price (FOB or CIF) for 380V and 10kV versions.

Final Note: If you need the same fan to operate on both 380V and 10kV (i.e., the fan must not spin faster or slower depending on the voltage), you must request a VFD (Variable Frequency Drive) for the low-voltage unit and ensure the motor is dual-voltage rated (most 10kV motors are not dual-rated). This is a complex electrical specification.