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 an optimal ball valve for your specific needs, it's crucial to consider the differences between trunnion-mounted and floating ball valves. Each type possesses distinct advantages and potential limitations.

Trunnion-mounted ball valves come equipped with additional mechanical support, making them well-suited for managing higher pressures and larger pipe diameters. These valves excel in applications requiring tight shutoff and are often utilized in pipelines transporting high-pressure fluids or gases. The trunnion-mounted configuration minimizes friction and wear on the ball, promoting smooth operation and prolonging service life.

Conversely, floating ball valves feature a more straightforward design and are generally more economical. These valves function efficiently in low to medium pressure settings and find common use in industries such as water treatment, chemical processing, and HVAC systems. Floating ball valves rely on fluid pressure to form a seal between the ball and seat, making them ideal for lower pressure applications.

To decide which ball valve type is ideal for your application, consider these factors:

1. Pressure and Temperature Requirements: Trunnion-mounted ball valves are preferable for high-pressure, high-temperature scenarios, whereas floating ball valves are better suited for lower pressure and temperature conditions.

2. Size and Flow Capacity: Trunnion-mounted ball valves typically offer larger sizes and higher flow capacities, making them perfect for larger pipe diameters.

3. Cost Considerations: Due to their simpler design, floating ball valves are usually more cost-effective, making them a favored choice for budget-conscious applications.

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

In summary, choosing between a trunnion-mounted and a floating ball valve hinges on your application's specific requirements. For high-pressure, high-temperature conditions with larger pipe diameters, a trunnion-mounted ball valve is the superior choice. Conversely, for low to medium pressure applications with smaller pipe diameters and budget constraints, a floating ball valve may be more appropriate.

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Additional Considerations and Common Questions:

5. Application Dependency: For automated systems that require frequent cycling, trunnion-mounted ball valves are preferable due to their durability and longevity. Floating ball valves are more suitable for manual or less frequent use cases.

6. Sealing Capability: Trunnion-mounted valves often provide better sealing due to the dual pivot system reducing operational torque, making them more efficient for preventing leaks.

7. Industry Standards: Consider industry-specific standards and certifications which might favor one type of valve over the other based on safety and functional requirements.

If you have further questions or need tailored advice, please contact us, and we’ll be happy to provide professional assistance.