Trunnion Mounted vs. Floating Ball Valves: Which is Better for Your Application?

Trunnion Mounted vs. Floating Ball Valves: Which is Better for Your Application?

When it comes to selecting a ball valve for your application, it's important to consider whether a trunnion mounted or floating ball valve would be the best choice. Both types have their own unique advantages and considerations.

Trunnion mounted ball valves are designed with additional mechanical support to handle higher pressures and larger diameters. They are ideal for applications that require tight shutoff and are often used in pipelines that transport high-pressure fluids or gases. The trunnion mounted design prevents excessive friction and wear on the ball, ensuring smooth operation and longer service life.

On the other hand, floating ball valves are simpler in design and are generally more cost-effective. They are suitable for low to medium pressure applications and are commonly used in industries such as water treatment, chemical processing, and HVAC systems. Floating ball valves rely on the pressure of the fluid to create a seal between the ball and the seat, making them suitable for applications with lower pressures.

To determine which type of ball valve is better for your application, consider the following factors:

1. Pressure and temperature requirements: Trunnion mounted ball valves are better suited for high-pressure and high-temperature applications, while floating ball valves are more suitable for low to medium pressure and temperature conditions.

2. Size and flow capacity: Trunnion mounted ball valves are available in larger sizes and have higher flow capacities compared to floating ball valves, making them ideal for applications with larger pipe diameters.

3. Cost considerations: Floating ball valves are generally more cost-effective due to their simpler design, making them a preferred choice for budget-conscious applications.

4. Maintenance and serviceability: Trunnion mounted ball valves may require more maintenance due to their complex design, while floating ball valves are easier to service and maintain.

In conclusion, the decision between a trunnion mounted and floating ball valve ultimately depends on the specific requirements of your application. If you need a valve for high-pressure, high-temperature conditions with larger pipe diameters, a trunnion mounted ball valve would be the better choice. On the other hand, if you have a low to medium pressure application with smaller pipe diameters and budget constraints, a floating ball valve may be more suitable.

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