What Are the Advantages of Using Trunnion Plastic Ball Valves?

• Posted by fitting tony March 24, 2020 - Filed in Arts & Culture - #plastic ball valve pp fitting  - 1,642 views

  Trunnion mounted plastic ball valve is very popular in the piping industry. That is because they can handle different kinds of applications and mediums including liquid, gasses, and slurries. Here are some of the most favorable advantages of using trunnion mounted ball valves.

  No Size Limit
  Trunnion mounted ball valves can be found in all kinds of sizes. Two and three-piece ball valves can house large sized balls so they are perfect for larger applications. Single unit trunnion mounted ball valves can be used for smaller, low-pressure applications. Since they can handle high-pressure operations, trunnion mounted ball valves are also suitable for critical operations.

  Customizable Features
  Trunnion mounted ball valves can have many value-added features. You can fortify the seats and the ball with injections to make them seal tightly. The bearings and bolts can be made corrosion-resistant increasing the valve’s longevity. Larger valves can be equipped with lifting lugs.

  Spring-Loaded Seats
  The basic difference between floating ball valves and trunnion mounting ball valves is that the latter has spring-loaded seats. In a floating ball valve, the pressure of the onstream forces the ball to move towards the seats creating a seal. However, the ball needs high pressure to do so. This makes floating ball valves ineffective in low-pressure situations. In trunnion mounted ball valves the pressure from the onstream activates the spring-loaded seats so that they move towards the ball that is held in place by the trunnion. This creates a tighter seal and makes the valve efficient in both high and low-pressure situations.

  Ease of Operation
  Any added pressure on the valve is absorbed by the trunnion and the stem. This means the valve needs a lower operating torque and a smaller actuator. This reduces costs and makes it easier to operate the valve. Three-piece trunnion mounted ball valves are also easy to repair, clean, replace, and maintain as you only have to remove one piece to access the working parts of the valve.

  Double Block and Bleed Capabilities
  One of the stand-out features of trunnion mounted ball valves is that they can have a double block and bleed capabilities. You can use multiple trunnions mounted ball valves to make a double block and bleed valve. Or add a bleed body to a two-piece or three-piece trunnion ball valve to help improve its sealing abilities. The double block and bleed function makes it possible to flush the valve under pressure and verify that the seats are sealing properly.

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