Medium-Pressure Centrifugal (Snail) Fan
Medium-pressure centrifugal (radial) fans for ducted exhaust, dust extraction, and range hood systems: selection guide by flow rate and mmSS pressure rating.
Products (2)
- Modern Teknik 0.5 HP Medium-Pressure Dust-Extracting Centrifugal Fan, 150 mmSS, 1500 m³/h – $485.23
- Yurtfan OB-0.5HP Medium-Pressure Dust Extraction Radial Fan, 800 m³, 135 mmSS – Request a quote (out of stock)
Brands: Modern Teknik · Yurtfan
What is a medium-pressure centrifugal fan?
Medium-pressure centrifugal fans are radial fans that offer balanced performance between flow rate and pressure. They are widely used in applications such as medium-length duct runs, filtered exhaust systems, dust extraction in workshops, and industrial range hoods. Values such as 135 mmSS in product names indicate the pressure level of fans in this class.
Applications
- Dust extraction lines in carpentry and furniture workshops
- Fume and particulate exhaust in welding and grinding areas
- Industrial kitchen range hood systems
- Filtered ventilation and exhaust systems
- Drying and process ventilation
Models described as dust extractors have a blade design suitable for operating in air containing particulate matter.
Selection criteria
When selecting a fan, first determine the flow rate required by the system, then calculate the total pressure loss created by the duct length, bends, filters, and hoods. Verify that the fan can deliver the desired flow rate at this pressure. In lines carrying dust, the air velocity inside the duct must be sufficient to prevent dust from settling. Motor power and electrical supply must be compatible with the facility's infrastructure.
Installation and maintenance
The fan's inlet and outlet connections should be made with flexible couplings to prevent vibration from being transmitted to the ducts. In dust extraction applications, adding a dust collection unit (cyclone, bag filter) before or after the fan protects both the environment and the fan. Deposits inside the blades and casing must be cleaned regularly.
Frequently asked questions
What applications is a medium-pressure fan ideal for?
Ideal for medium-length duct exhaust and dust extraction applications.
Is a filter required for dust extraction?
Yes; without a dust collection unit, the extracted dust disperses into the environment. It can also shorten the fan's service life.
What is the most common mistake when selecting a fan?
Selecting based on free-air flow rate alone without accounting for duct resistance.
How can the noise of a medium-pressure fan be reduced?
Using flexible connections, anti-vibration mounts, and a silencer where needed reduces noise.
Are three-phase models available?
The power supply of models in this category is stated in the product details; select the one suitable for your installation.
What if higher pressure is needed?
For long runs, see high-pressure centrifugal fans.
What duct length is a medium-pressure fan suitable for?
The suitable duct length varies depending on the number of elbows and filter resistance. Calculate the total pressure drop and compare it with the fan's performance values.