When it comes to handling ball valves, whether they are in the open or closed position, proper care and best practices are crucial for ensuring safety, longevity, and efficiency in any system. Ball valves are widely used in industries like oil and gas, water treatment, and chemical processing, due to their reliability and simplicity in regulating flow. Below, we discuss some best practices for handling ball valves in both open and closed positions. Before operating a ball valve, it is essential to understand its design and how it functions. A ball valve typically has a spherical disc the ball with a hole in the middle, which aligns with the pipeline when open, allowing flow through. When closed, the ball is rotated 90 degrees to block the flow. Operators must be familiar with the specific type of valve in use whether it is a floating ball valve, trunnion ball valve, or another type as this will affect its performance and handling.
The most important rule when operating a ball valve is to ensure that it is moved fully into either the open or closed position. The ball valve should never be left in a partially open or partially closed position, as this can cause internal damage to the valve seats and result in improper sealing. Always operate the valve with a complete 90-degree turn of the handle or actuator, which ensures that the valve reaches either full open or full closed status. Turn the valve handle counterclockwise to open the valve. This will align the ball’s hole with the flow direction. Make sure to turn it slowly and steadily to avoid any shock to the system or the valve components. It is also important to check that the valve fully opens to allow maximum flow. To close the valve, turn the handle clockwise until it stops. This will rotate the ball so that its solid side faces the flow direction, effectively blocking the flow.
Never force the handle if it does not move smoothly, as this can indicate a problem, such as pressure buildup or a mechanical issue within the valve. Before adjusting or operating any valve, it is essential to check the pressure and temperature in the system. Ball valves often work under high-pressure conditions, and improper handling under such circumstances can lead to accidents or equipment failure. Always release any trapped pressure if possible and allow the valve to cool down before attempting to ball valve open or closed. If the valve is hot, use proper protective gear to avoid burns or injury. It is essential to avoid over-tightening the valve handle, especially in manual or actuated ball valves. Excessive force can cause damage to the valve’s components and the sealing surfaces. Over-tightening the handle can also lead to wear and tear on the valve seat, reducing its lifespan and causing leaks. Always tighten to the manufacturer’s recommended torque specification.