Double offset butterfly valves are critical components in various industrial applications. إنها تتحكم بشكل فعال في تدفق السوائل مع الحد الأدنى من انخفاض الضغط. يستكشف هذا المقال تصميمهم, الوظيفة, المزايا, والتطبيقات المشتركة. خذ نظرة ثاقبة على TWT, a leading manufacturer in the valve industry.
Understanding the Double Offset Butterfly Valve Design
Design Features
Double offset butterfly valves, 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, and
- 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, which makes the connection between the valve and the pipe very easy and will not leak. As well as the pipe end connected with the valve is also designed to be the same size as the flange and hole on the flanged valve. In general, these valves offer defect-free and worry-free performance.
Key Components
- جسم: Typically made from durable materials like ductile (أستم A536 /GGG40).
- القرص: All made in ASTM A536/ GGG40
- ينبع: الفولاذ المقاوم للصدأ: أستم A182 304/316/431/ دوبلكس ستانلس ستيل
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 | Chemical, Food and Beverage, التدفئة والتهوية وتكييف الهواء, Mining |
| High corrosion resistance | Oil and Gas, Petrochemical, الأدوية | ||
| High design strength | توليد الطاقة, Pulp and Paper, Refining | ||
| Versatile in various applications | Sugar Processing, Water Filtration |
Advantages of DN1400 Flange Dimensions صمامات الفراشة ذات الإزاحة المزدوجة
- Reduced Friction: The offset design minimizes contact between the disc and the seat, reducing friction and wear.
- Cleanability: Due to the self cleaning(لن يتم محاصرة أي بقايا) function, it’s also easy to clean and disinfect for potable water systems, إلخ.
- Lightweight and Compact: Compared to other valve types, double offset butterfly valves reduced weight and overall dimensions, making them easier to install and maintain.
- براعه: Installation without restriction in the direction of flow (polished disc rim to avoid damage to the valve seat. For installation there is no gasket needed).
- Cost-Effective: Low-pressure loss and reduced energy costs. Good corrosion resistance.
- Multiple Option
- يدوي, المحرك الكهربائي, المحرك بالهواء المضغوط, المحرك الهيدروليكي, and bare shaft are optional
- ماء, يشرب الماء, مياه متنقلة, زيت, seawater, and gas are all available working services.
- الحجم من DN150-DN3600
خاتمة
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]