Qu'est-ce que la vanne papillon à double excentration?
Vannes papillon double excentration are critical components in various industrial applications. They effectively control fluid flow with minimal pressure drop. This article explores their design, Fonctionnalité, avantages, and common applications. Take an insight into TWT, a leading manufacturer in the valve industry.
Understanding the Double Offset Butterfly Valve Design
Design Features
Vannes papillon double excentration, also known as high-performance butterfly valves, have two offsets from the valve body’s center:
- The shaft axis is offset from the disc’s seat and body seal’s centerline, et
- The shaft axis is eccentric to the pipeline’s/valve’s center line.
This unique design helps minimize turbulence and ensures a tight seal, making these valves ideal for a variety of applications.
How They Work
A butterfly valve has flanges on both the inlet and outlet faces, ce qui rend la connexion entre la vanne et le tuyau très facile et ne fuira pas. De même que l'extrémité du tuyau connectée à la vanne est également conçue pour avoir la même taille que la bride et le trou sur la vanne à bride. En général, these valves offer defect-free and worry-free performance.
Key Components
- Corps: Typically made from durable materials like ductile (ASTM A536 /GGG40).
- Disque: All made in ASTM A536/ GGG40
- Tige: Acier inoxydable: ASTM A182 304/316/431/ Acier inoxydable duplex
Applications of Double Offset Butterfly Valves
These valves are widely used in various industries due to their robustness and efficiency:
| Application Field | Specific Applications | Key Advantages | Industries |
|---|---|---|---|
| Fluid Types | Corrosive gases, chlorine, oxygen, seawater, acidic gases, steam, toxic substances, ultrapure water, vacuum, wastewater | Lightweight, cost-effective, capable of handling extreme pressures and temperatures | Chimique, Food and Beverage, HVAC, Mining |
| High corrosion resistance | Pétrole et Gaz, Petrochemical, Pharmaceutical | ||
| High design strength | La production d'énergie, Pulp and Paper, Refining | ||
| Versatile in various applications | Sugar Processing, Water Filtration |
Advantages of DN1400 Flange Dimensions Vannes papillon à double excentration
- Reduced Friction: The offset design minimizes contact between the disc and the seat, reducing friction and wear.
- Cleanability: Due to the self cleaning(aucun résidu ne sera piégé) function, it’s also easy to clean and disinfect for potable water systems, etc..
- Lightweight and Compact: Compared to other valve types, double offset butterfly valves reduced weight and overall dimensions, making them easier to install and maintain.
- Polyvalence: Installation without restriction in the direction of flow (polished disc rim to avoid damage to the valve seat. Pour l'installation, aucun joint n'est nécessaire).
- Cost-Effective: Low-pressure loss and reduced energy costs. Good corrosion resistance.
- Multiple Option
- Manuel, actionneur électrique, actionneur pneumatique, actionneur hydraulique, and bare shaft are optional
- Eau, boire de l'eau, eau portable, Huile, seawater, and gas are all available working services.
- La taille est de DN150-DN3600
Conclusion
Double offset butterfly valves play a vital role in fluid control across many industries. Their unique design offers significant advantages, including improved sealing, reduced wear, and versatility in application. Companies like TWT lead the way in providing high-quality valves that enhance efficiency and reduce costs.
For more information on double offset butterfly valves and TWT’s offerings, contact us by phone at +86 18722007022 or email us at [email protected]