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Advantages and Disadvantages of Double Trunnion Ball Valve

Double Trunnion Ball Valve

There are various options when choosing the right type of ball valve for your industrial application. One of the popular choices is the double trunnion ball valve – a type of ball valve that offers several advantages over other types of ball valves. Double trunnion ball valves are commonly used in high-pressure and high-temperature applications, where safety and reliability are paramount. In this blog post, we will explore the advantages and disadvantages of double trunnion ball valves to help you make an informed choice for your application.

Advantages of Double Trunnion Ball Valve

Enhanced durability and longevity: The unique design of double trunnion ball valves features additional ball support, significantly reducing the strain on the stem and packing. This makes the valve more durable and ensures it will last longer than other ball valves.

Reduced operating torque: Double trunnion ball valves require less operating torque than other types, making operating and maintaining easier. This can save you money on operational costs and reduce downtime associated with valve failure.

Improved sealing: Double trunnion ball valves provide better sealing than other types of ball valves due to the added support of the ball. This can help to prevent leaks and maintain a tight seal in high-pressure and high-temperature applications.

Versatility: Double trunnion ball valves can be used in various industrial applications, including petrochemical, oil and gas, and chemical industries. They are suitable for both upstream and downstream applications and can handle various media types.

Disadvantages of Double Trunnion Ball Valve

Higher cost: Double-tunnion ball valves are typically more expensive than standard ones due to their more complex design and increased materials.

Complex design: The double trunnion design of these valves can make them more complex, posing challenges during installation and maintenance. This means that they may require more skilled workers for installation or maintenance.

Limited temperature range: Although well suited for high-temperature applications, double trunnion ball valves may not be suitable for extremely low-temperature applications.

Limited availability: Double trunnion ball valves may only be readily available in some markets and regions due to their more specialised application and design.


Double trunnion ball valves are a reliable and durable option for high-pressure and high-temperature applications. They provide enhanced sealing, reduced operating torque, and versatility for various industrial applications. However, they come with a higher cost, complex design, and limited availability. When selecting a ball valve, it’s important to consider the specific needs of your application and compare the advantages and disadvantages of various types of ball valves to make an informed decision.

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