Wafer Colossus Lever-Gear Operated Butterfly Valves
Unlocking the Power of Double Offset Movement: The Wafer TTV High Performance Double Offset Butterfly Valves
Introduction
In the world of industrial applications, achieving a reliable and leak-tight shut-off is of paramount importance. Many industries face the challenge of handling aggressive chemicals, petroleum, gases, and various other demanding mediums. To address these challenges, the Wafer TTV High Performance Double Offset Butterfly Valves have emerged as a game-changer. In this article, we will delve into the functionalities and advantages of these valves, focusing on their double offset movement and reliable leak-tight capabilities.
Table of Contents
- What are Double Offset Butterfly Valves?
- Understanding the Double Offset Movement
- First Offset: The Shaft's Position
- Second Offset: The Position of the Disc
- The Advantages of Double Offset Butterfly Valves
- Reliable Leak Tight Shut-off
- Reduced Friction and Wear
- Extended Valve Life
- Improved Performance in High-Temperature Applications
- Enhanced Corrosion Resistance
- Versatility in Mediums
- Exploring the Wafer TTV High Performance Double Offset Butterfly Valves
- Construction and Design
- Seat Materials
- Recommended Applications
- Optional Seat Materials
- R-PTFE Seat
- Flexible Metal Seat
- Compliance with Safety Standards
- BS 6755 Part 2
- API 6FA/607 Fire Safety
- Conclusion
What are Double Offset Butterfly Valves?
Double offset butterfly valves are a type of quarter-turn valve that uses a disc with two distinct offsets from the center axis. These offsets enable the disc to move in a slight elliptical path when opening or closing the valve, resulting in a cam-like action.
Understanding the Double Offset Movement
The double offset movement is a crucial aspect that sets these valves apart from other conventional butterfly valves. It involves two key offsets:
First Offset: The Shaft's Position
The first offset occurs between the centerline of the valve shaft and the centerline of the sealing element. This design feature reduces the friction between the disc and the seal during the initial opening, enhancing the valve's performance and reducing wear over time.
Second Offset: The Position of the Disc
The second offset involves the position of the disc concerning the centerline of the pipe bore. As the valve opens, the disc moves further away from the seat, minimizing the contact area and reducing the torque required for operation. This results in a smoother, more efficient valve movement.
The Advantages of Double Offset Butterfly Valves
The implementation of double offset technology in butterfly valves offers numerous advantages that make them suitable for a wide range of applications:
Reliable Leak Tight Shut-off
One of the primary benefits of double offset butterfly valves is their ability to provide a reliable leak-tight shut-off, even in demanding conditions. The precise alignment of the disc and seat ensures minimal leakage, enhancing safety and preventing product loss.
Reduced Friction and Wear
The double offset movement significantly reduces friction between the disc and the seat during valve operation. This reduced friction translates to less wear and tear, increasing the valve's lifespan and reducing maintenance requirements.
Extended Valve Life
With reduced wear and friction, double offset butterfly valves can offer an extended service life compared to traditional valves. This results in cost savings for industries and less downtime for maintenance.
Improved Performance in High-Temperature Applications
For industries dealing with high-temperature mediums such as saturated steam, gases, bitumen, and thermal oil, the flexible metal seat option of the Wafer TTV Double Offset Butterfly Valves provides reliable performance even in extreme conditions.
Enhanced Corrosion Resistance
In aggressive chemical environments, the R-PTFE seat option excels, providing excellent resistance to corrosion and chemical attacks. This makes the valves suitable for applications involving aggressive chemicals, LPG/LNG, petroleum, ethylene, and vacuum.
Versatility in Mediums
The Wafer TTV Double Offset Butterfly Valves offer versatility by providing options for various seat materials, enabling their use in diverse industrial mediums.
Exploring the Wafer TTV High Performance Double Offset Butterfly Valves
The Wafer TTV High Performance Double Offset Butterfly Valves are specially designed to meet the demands of critical applications. These valves exhibit remarkable features that make them a preferred choice for industries worldwide.
Construction and Design
The valves boast a robust construction and are engineered to withstand high pressures and temperatures. Their compact design ensures easy installation and maintenance.
Seat Materials
The Wafer TTV High Performance Double Offset Butterfly Valves come with two seat material options:
R-PTFE Seat
The R-PTFE seat is ideal for applications involving aggressive chemicals, LPG/LNG, petroleum, ethylene, and vacuum. Its excellent chemical resistance ensures reliable performance in harsh environments.
Flexible Metal Seat
For applications requiring higher temperature capabilities, such as saturated steam, gases, bitumen, and thermal oil, the flexible metal seat option complies with BS 6755 part 2 or API 6FA/607 fire safety standards.
Optional Seat Materials
The Wafer TTV High Performance Double Offset Butterfly Valves provide customers with the flexibility to choose the most suitable seat material for their specific applications.
R-PTFE Seat
The R-PTFE seat option is highly recommended for industries handling aggressive chemicals, LPG/LNG, petroleum, ethylene, and vacuum. Its exceptional chemical resistance and leak-tight capabilities make it a reliable choice for demanding conditions.
Flexible Metal Seat
For applications involving saturated steam, gases, bitumen, and thermal oil, the flexible metal seat is the preferred choice. Its compliance with BS 6755 part 2 or API 6FA/607 fire safety standards ensures safety and performance in high-temperature environments.
Compliance with Safety Standards
The Wafer TTV High Performance Double Offset Butterfly Valves are designed and manufactured to meet rigorous safety standards:
BS 6755
The valves comply with BS 6755 part 2, ensuring fire safety and reliable operation even in hazardous situations.
API 6FA/607 Fire Safety
Additionally, the valves adhere to API 6FA/607 fire safety standards, providing an extra layer of protection in critical applications.
Conclusion
In conclusion, the Wafer TTV High Performance Double Offset Butterfly Valves have proven to be a game-changer in the realm of industrial applications. With their unique double offset movement, these valves provide a reliable and leak-tight shut-off, making them highly suitable for demanding mediums like aggressive chemicals, LPG/LNG, petroleum, and more. The advantages of reduced friction, extended valve life, and improved performance in high-temperature applications further solidify their position as a top choice for critical operations.
