Technical Support
How to Select a Rotary Airlock Valve
To recommend the right rotary airlock valve or rotary feeder, FUWEI needs to understand the material, process and working conditions. Complete selection information helps improve feeding stability, sealing performance and service life.
Please Provide the Following Information
- Application purpose: quantitative discharge, full discharge, airlock sealing, dosing or continuous feeding.
- Installation location: indoor or outdoor installation, available space and connection direction.
- Conveying method: pneumatic conveying, negative-pressure conveying, positive-pressure conveying or gravity flow.
- Capacity requirement: material flow rate per hour and whether the feeding amount is fixed or variable.
- Material properties: material name, particle size, true density, bulk density, temperature, angle of repose, moisture content and viscosity.
- Conveying gas and pressure: gas type and pressure difference between the upper and lower flanges.
- Flange standard: flange shape, size, drilling standard and connection requirements.
- Additional chamber: whether an acceleration chamber or extraction chamber is required.
- Surface treatment: whether the inner cavity needs anti-stick, anti-corrosion, polishing, coating or other special treatment.
- Motor and reducer: preferred brand, protection grade, explosion-proof level, voltage and frequency.
- Painting color: specified color or FUWEI standard coating.
Capacity Calculation Reference
The theoretical discharge capacity can be estimated with the formula: G = 0.06 x V x n x Y x r x K.
- G: discharge capacity, tons/hour
- V: rotary valve volume, liters/revolution
- n: rotary valve speed, rpm
- Y: volumetric efficiency, usually 0.7-0.8 for granules and 0.5-0.6 for powders
- r: material bulk density, tons/m3
- K: correction factor, usually 0.7-0.8
If you are not sure which model to choose, send your process data to FUWEI. Our team can help match the suitable rotary valve type, material and specification.
Rotary Airlock Valve Sizing & Selection Guide
Rotary airlock valve sizing should match the required capacity, bulk density, rotor volume, speed, pressure difference and material behavior. A correctly sized rotary valve helps keep powder handling and pneumatic conveying systems stable, sealed and energy efficient.
Quick Sizing Steps
- Confirm material data: material name, particle size, bulk density, moisture, temperature and flowability.
- Confirm required capacity: kg/h, t/h or m3/h for continuous discharge, dosing or airlock feeding.
- Check pressure condition: gravity discharge, negative pressure conveying or positive pressure pneumatic conveying.
- Select valve size and rotor speed: match rotor volume with capacity while keeping speed suitable for sealing and wear control.
- Choose material and structure: carbon steel, stainless steel, wear-resistant coating, sanitary design or anti-stick treatment.
Sizing Calculator Information
| Data Needed | Typical Unit | Used For |
|---|---|---|
| Required capacity | kg/h, t/h, m3/h | Valve size and rotor volume selection |
| Bulk density | kg/m3 | Capacity conversion and motor load check |
| Pressure difference | bar, kPa | Airlock sealing and leakage control |
| Material temperature | deg C | Clearance, bearing and sealing design |
| Inlet and outlet size | DN, mm, drawing | Flange matching and installation layout |
FAQ
How do I choose a rotary airlock valve size?
Start with material bulk density, capacity and pressure condition. FUWEI can calculate a suitable valve size and rotor speed after receiving these process parameters.
Can FUWEI customize the flange or rotor?
Yes. FUWEI supports OEM and ODM rotary valve design, including round flange, square flange, special rotor, wear-resistant coating and stainless steel construction.
Need sizing help? Send your material name, capacity, pressure, temperature and installation drawing to FUWEI for rotary airlock valve selection support.
How to Select a Rotary Airlock Valve
To recommend the right rotary airlock valve or rotary feeder, FUWEI needs to understand the material, process and working conditions. Complete selection information helps improve feeding stability, sealing performance and service life.
Please Provide the Following Information
- Application purpose: quantitative discharge, full discharge, airlock sealing, dosing or continuous feeding.
- Installation location: indoor or outdoor installation, available space and connection direction.
- Conveying method: pneumatic conveying, negative-pressure conveying, positive-pressure conveying or gravity flow.
- Capacity requirement: material flow rate per hour and whether the feeding amount is fixed or variable.
- Material properties: material name, particle size, true density, bulk density, temperature, angle of repose, moisture content and viscosity.
- Conveying gas and pressure: gas type and pressure difference between the upper and lower flanges.
- Flange standard: flange shape, size, drilling standard and connection requirements.
- Additional chamber: whether an acceleration chamber or extraction chamber is required.
- Surface treatment: whether the inner cavity needs anti-stick, anti-corrosion, polishing, coating or other special treatment.
- Motor and reducer: preferred brand, protection grade, explosion-proof level, voltage and frequency.
- Painting color: specified color or FUWEI standard coating.
Capacity Calculation Reference
The theoretical discharge capacity can be estimated with the formula: G = 0.06 x V x n x Y x r x K.
- G: discharge capacity, tons/hour
- V: rotary valve volume, liters/revolution
- n: rotary valve speed, rpm
- Y: volumetric efficiency, usually 0.7-0.8 for granules and 0.5-0.6 for powders
- r: material bulk density, tons/m3
- K: correction factor, usually 0.7-0.8
If you are not sure which model to choose, send your process data to FUWEI. Our team can help match the suitable rotary valve type, material and specification.
Rotary Airlock Valve Sizing & Selection Guide
Rotary airlock valve sizing should match the required capacity, bulk density, rotor volume, speed, pressure difference and material behavior. A correctly sized rotary valve helps keep powder handling and pneumatic conveying systems stable, sealed and energy efficient.
Quick Sizing Steps
- Confirm material data: material name, particle size, bulk density, moisture, temperature and flowability.
- Confirm required capacity: kg/h, t/h or m3/h for continuous discharge, dosing or airlock feeding.
- Check pressure condition: gravity discharge, negative pressure conveying or positive pressure pneumatic conveying.
- Select valve size and rotor speed: match rotor volume with capacity while keeping speed suitable for sealing and wear control.
- Choose material and structure: carbon steel, stainless steel, wear-resistant coating, sanitary design or anti-stick treatment.
Sizing Calculator Information
| Data Needed | Typical Unit | Used For |
|---|---|---|
| Required capacity | kg/h, t/h, m3/h | Valve size and rotor volume selection |
| Bulk density | kg/m3 | Capacity conversion and motor load check |
| Pressure difference | bar, kPa | Airlock sealing and leakage control |
| Material temperature | deg C | Clearance, bearing and sealing design |
| Inlet and outlet size | DN, mm, drawing | Flange matching and installation layout |
FAQ
How do I choose a rotary airlock valve size?
Start with material bulk density, capacity and pressure condition. FUWEI can calculate a suitable valve size and rotor speed after receiving these process parameters.
Can FUWEI customize the flange or rotor?
Yes. FUWEI supports OEM and ODM rotary valve design, including round flange, square flange, special rotor, wear-resistant coating and stainless steel construction.
Need sizing help? Send your material name, capacity, pressure, temperature and installation drawing to FUWEI for rotary airlock valve selection support.
