Environmental Treatment
Ventilation, exhaust, dust collection and treatment-duct duties.
VDF-25C / VDF-25D / VDF-25TApplication overview
Applications
Industrial duties reviewed around the actual system
JNS welded butterfly valves serve low-pressure industrial duties: ventilation, exhaust and dust collection ducts, flue gas treatment, industrial gas transfer, marine ventilation and compartment isolation.
The application context helps identify a relevant series, while the final valve construction remains tied to the submitted operating and installation conditions - reviewed project by project before production.
Where JNS valves are applied
Five typical industry groups are listed below. Each entry names the series usually reviewed for that duty - the final construction always follows the project conditions.
Steel & Metallurgy
Industrial ventilation, gas handling and abrasive-service review.
VDF-25C / VDF-25TEnergy & Power
Flue gas, exhaust and low-pressure process-duct applications.
VDF-25C / VDF-25D / VDF-25TChemical Processing
Medium-specific materials, sealing and actuation options subject to project review.
VDF-25D / VDF-25T / VDF-25CSMarine Ventilation
Duct isolation, compartment separation and remote-operation requirements.
VDF-25B / VDF-25CSWhich series fits your duty?
A first orientation between the JNS series. The final configuration is always confirmed against the submitted operating conditions and drawings.
| Series | Geometry | Typical duty | Configuration approach |
|---|---|---|---|
| VDF-25C | Concentric | Ventilation, flue gas and dust collection | Catalogue range with project review |
| VDF-25D | Double offset | Frequent cycling and automated control | Sealing and actuation by duty |
| VDF-25T | Triple offset | Tight shutoff, elevated temperature or abrasive service | Sealing configuration by project |
| VDF-25B | Airtight isolation | Marine ventilation, compartment isolation and FGD ducts | Drawing-based project configuration |
| VDF-25CS | Custom welded valve | Non-standard dimensions and interfaces | Customer drawings and engineering review |
Application review starts with the operating data
Share the medium, pressure, temperature, dimensions, connection standard, sealing and actuation requirements. Our engineering team reviews the duty and proposes a suitable series and configuration.
Submit Your Application Data- Medium and dust or gas characteristics
- Pressure and temperature range
- Duct dimensions and connection standard
- Sealing class and leakage requirements
- Manual, pneumatic or electric actuation
- Coating and corrosion protection needs