Q1: Trunnion vs Floating Ball Valves: Best for Refining Processes?
A: Trunnion ball valves are generally more suitable for refining processes due to their robust design and higher pressure and temperature rating.
Q2: What is a trunnion ball valve?
A: A trunnion ball valve has a fixed stem at the bottom and top of the valve ball, which ensures that the ball remains in place and is not affected by pressure fluctuations or vibrations. This design also makes it easier to support the weight of larger ball valves.
Q3: What is a floating ball valve?
A: A floating ball valve has a valve ball that is not fixed in place and is free to move around inside the valve body. This design allows the valve to provide a tight seal even at lower pressures.
Q4: How do trunnion ball valves differ from floating ball valves?
A: As mentioned, trunnion ball valves have a fixed stem at the bottom and top of the ball, while floating ball valves have a ball that is not fixed in place. Trunnion ball valves are generally more robust and can handle higher pressure and temperature ratings than floating ball valves.
Q5: What are some advantages of trunnion ball valves?
A: Trunnion ball valves have a more secure and stable design, which makes them suitable for larger and heavier ball valves. They also have a higher pressure and temperature rating, making them more suitable for harsh or demanding applications. Additionally, trunnion ball valves often have lower operating torques, resulting in less wear and tear on the valve and actuator.
Q6: What are some disadvantages of floating ball valves?
A: Floating ball valves have a tendency to leak at lower pressures due to the ball not being fixed in place. They also have a higher operating torque, which can result in more wear and tear on the valve and actuator. Finally, floating ball valves may not be suitable for larger or heavier ball valves due to their design.
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