Ball valves are widely used control valves in industrial pipelines, prized for their simplicity, minimal flow resistance, and superior sealing capabilities. However, in the course of their operation, ball valves may encounter typical problems such as valve sticking, leakage, and seepage. In this article, we will delve into these prevalent ball valve issues and offer solutions for each.
    Problem 1: Valve Sticking
    When a ball valve remains inactive for an extended period or experiences operational challenges, it can become stuck, rendering it incapable of functioning properly. To address this issue, follow these steps:
    • Check for Foreign Objects or Debris: Inspect the valve for obstructions caused by foreign objects or dirt. If present, remove these impediments.
    • Repair or Replace Components: If valve sticking is attributed to issues like a misaligned valve stem or worn sealing surfaces, consider repairing or replacing the affected parts.
    Problem 2: Leakage
    Leakage is a common issue with ball valves, stemming from various factors:
    • Damaged Sealing Surfaces: Over time, the sealing surfaces of ball valves can wear down, resulting in leakage.
    • Aging Sealing Gaskets: The sealing gaskets within ball valves may deteriorate, becoming soft and incapable of forming a tight seal, leading to leakage.
    • Loose Fasteners: Loose fasteners such as screws and nuts can lead to leakage in ball valves.
    • Improper Installation: Incorrect installation of ball valves can also result in leakage.
    To address these causes of leakage:
    • Replace Sealing Surfaces: If the sealing surfaces of the ball valve are damaged due to prolonged use, replace them.
    • Replace Sealing Gaskets: When the sealing gaskets within the ball valve have aged and softened, replace them with new ones.
    • Tighten Fasteners: Inspect and tighten any loose fasteners on the ball valve.
    • Reinstall Properly: Ensure that the ball valve is correctly installed to prevent leakage.
    Problem 3: Seepage
    Seepage in ball valves is another prevalent issue, which can arise from several reasons:
    • Aging Sealing Gaskets: As with leakage, seepage can be caused by aging sealing gaskets that no longer provide an effective seal.
    • Damaged Sealing Components: Damage to sealing components such as O-rings or packing can lead to seepage.
    • Deformed Ball: When the ball within the ball valve becomes deformed, it can result in seepage.
    To resolve seepage issues:
    • Replace Sealing Gaskets: If the sealing gaskets in the ball valve have aged and lost their effectiveness, replace them.
    • Replace Sealing Components: When sealing components like O-rings or packing are damaged, replace them to eliminate seepage.
    • Replace the Ball: If the ball in the ball valve is deformed, replace it to rectify seepage.
    Understanding the common issues that can impact ball valves and knowing how to troubleshoot and rectify them is crucial for maintaining the reliability and performance of industrial pipelines. Regular maintenance and prompt action to address these problems can prolong the lifespan of ball valves and ensure their proper functioning.