Gas leakage is one of the most critical risks in chemical processing, petrochemical plants and hazardous gas transportation. Conventional centrifugal fans often allow leakage at the shaft sealing area after long-term operation, increasing safety risks and maintenance costs.

SIMO Zero Leakage Centrifugal Blowers are specifically engineered for applications where gas containment is essential. Each system is customized according to the gas properties, operating temperature, pressure and sealing requirements to achieve reliable long-term performance.

Available in 304, 316L and 310S stainless steel, these fans are suitable for corrosive, toxic, flammable and explosive gases used in demanding industrial environments.

We employ specialized sealing techniques tailored to the characteristics and composition of the conveyed gas:

Our fan systems are categorized by drive configuration to ensure optimal performance for your specific working conditions:

• Custom fan parameters designed according to provided specifications
• Common models available with zero leakage structure design
• Suitable for furnace, chemical industry, resource utilization, and other sectors handling harmful, organic, inorganic, and explosion-proof gases

Advanced finite element analysis software tests key components to ensure impeller strength reliability with an expected 20-year service life. Advanced aerodynamic modeling for fluid simulation improves design efficiency and accuracy.

Over 300 sets of processing and testing equipment including CNC laser cutting machines, CNC spinning machines, welding robots, CNC bending machines, CNC gantry milling machines, CNC lathes, and 40T dynamic balancing machines.

Key components selected from renowned domestic and international brands including Havalo, FAG, SKF, NSK bearings and Sima Motors, Shangdian, Landian, Xiangtan, Jiamusi, ABB, motors.

Strict quality management system with dynamic balance experiments, vibration experiments, rotor performance experiments, and characteristic experiments to ensure zero error in factory production.

Why SIMO Engineering Solutions?

Every hazardous gas application is different.

Instead of supplying a standard fan, SIMO evaluates:

• Gas composition
• Corrosiveness
• Operating temperature
• Explosion protection requirements
• Leakage requirements
• Installation conditions

before recommending the most suitable centrifugal blower solution.

Frequently Asked Questions

What is a zero leakage centrifugal blower?

A zero leakage centrifugal blower is a specially designed industrial fan that minimizes gas leakage through customized shaft sealing, structural design and material selection. It is commonly used for hazardous, corrosive or valuable process gases.

Which industries require zero leakage fans?

Typical industries include:

• Chemical processing
• Petrochemical
• Pharmaceutical
• Hazardous waste treatment
• VOC recovery
• Industrial gas handling

Which stainless steel material should I choose?

• 304 – General industrial environments.
• 316L – Better resistance to chlorides and many corrosive chemicals.
• 310S – Preferred for high-temperature applications requiring oxidation resistance. Material selection should always match the actual process conditions.

Can the sealing system be customized?

Yes. The sealing configuration is selected according to the gas properties, operating pressure, temperature and leakage requirements.

What information is required before fan selection?

To recommend the appropriate blower, SIMO engineers typically require:

• Gas composition
• Airflow
• Pressure
• Operating temperature
• Corrosion characteristics
• Installation conditions

CTA

Looking for a Zero Leakage Blower for Hazardous Gas?

Provide the following information:

✔ Gas composition

✔ Air volume

✔ Pressure

✔ Operating temperature

✔ Corrosion characteristics

Our engineering team will recommend the most suitable sealed centrifugal blower for your application.