What are the differences between Trunnion Vs Floating Ball Valve?

When it comes to choosing the right valve for a particular application, there are many factors to consider. Among the most common types of valves used in the oil and gas industry are trunnion and floating ball valves. These two types of valves have distinct differences in terms of design, function, and performance. In this article, we will explore the key differences between trunnion and floating ball valves to help you make an informed decision for your specific needs.

Trunnion Ball Valve.

A trunnion ball valve is a type of valve that uses a fixed, stationary ball to control the flow of fluids through a pipeline. This ball is mounted on a shaft (trunnion) that is anchored to the valve body. In a trunnion ball valve, the ball is held in place by trunnion bearings that allow it to rotate and create a tight seal when closed.

One of the key advantages of trunnion ball valves is their ability to handle high-pressure and high-temperature applications. The trunnion design provides greater stability and support for the ball, which allows the valve to withstand higher pressures without risk of deformation or leakage. Trunnion ball valves are also known for their excellent throttling and control capabilities, making them ideal for demanding industrial processes.

Floating Ball Valve.

A floating ball valve, on the other hand, uses a free-floating ball to control the flow of fluids. Unlike a trunnion ball valve, the ball in a floating ball valve is not attached to the valve body. Instead, it is held in place by the pressure of the fluid flowing through the valve, which creates a seal when the valve is closed.

Floating ball valves are typically more compact and lightweight than trunnion ball valves, making them a popular choice for applications where space is limited. They are also easier to operate and require less torque to open and close, which can be an advantage in certain situations. However, floating ball valves may not be as well-suited for high-pressure or high-temperature applications due to the reliance on the pressure of the fluid to create a seal.

Differences between Trunnion and Floating Ball Valves.

1. Design.

- Trunnion ball valves have a fixed, stationary ball mounted on a shaft, while floating ball valves have a free-floating ball that relies on fluid pressure.

2. Pressure and Temperature.

- Trunnion ball valves are better suited for high-pressure and high-temperature applications, while floating ball valves may be more limited in this regard.

3. Size and Weight.

- Floating ball valves are typically more compact and lightweight compared to trunnion ball valves.

Conclusion.

In conclusion, the choice between a trunnion and floating ball valve depends on factors such as pressure, temperature, space constraints, and operational requirements. Trunnion ball valves are better suited for high-pressure applications, while floating ball valves may be more suitable for applications where space and weight are critical. Understanding the differences between these two types of valves will help you make an informed decision for your specific needs.

Whether you need assistance in selecting the right valve for your application or have any questions about trunnion and floating ball valves, please do not hesitate to contact us. Our team of experts is ready to provide you with the guidance and support you need.

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