Common Problems and Solutions for Globe Valves

Globe valves are a commonly used type of valve known for their relatively simple structure, excellent sealing performance, flexible regulation, high reliability, and long service life.

Common Issues with Globe Valves

1. Leakage Issues

Leakage is one of the most common problems with globe valves, which can occur at various parts such as the valve body, stem, or seat. Main causes include wear of the sealing surface, aging of sealing gaskets, or bending of the valve stem. Leakage not only leads to energy waste but can also cause damage to equipment and the environment.

2. Valve Sticking

After prolonged use, globe valves may become stuck, unable to open or close properly. This can be due to internal scaling, accumulation of impurities, or insufficient lubrication. A stuck valve can halt equipment operation and affect production efficiency.

3. Inflexible Valve Movement

Inflexible valve movement during operation is another common issue. Causes may include a bent valve stem, internal scaling, or poor lubrication. Inflexible valve movement increases operational force and reduces work efficiency.

4. Valve Air Leakage

If gas continues to leak when the globe valve is closed, it is termed air leakage. This issue may arise from worn sealing surfaces, aging sealing gaskets, or corrosion of valve materials. Valve air leakage leads to energy waste and hampers normal equipment operation.

Solutions to Globe Valve Issues

1. Dealing with Leakage Issues

-Replace the sealing surface or sealing gasket to ensure proper sealing performance.
-Check for stem bending; replace if bent to restore functionality.
-Perform regular lubrication maintenance to keep the valve operating smoothly.

2. Addressing Sticking Valves

-Clean the valve internals to remove scaling and impurities.
-Regularly lubricate to ensure flexible valve operation.
-If necessary, replace internal valve components.

3. Resolving Inflexible Valve Movement

-Check for stem bending and promptly replace if necessary.
-Clean the valve internals to remove scaling and impurities.
-Regularly lubricate to maintain valve flexibility.

4. Mitigating Valve Air Leakage

-Replace the sealing surface or sealing gasket to restore proper sealing.
-Check for material corrosion; replace affected components promptly.
-Perform regular lubrication maintenance to ensure proper valve operation.