Why Does a Solenoid Valve Fail?

Solenoid valves are electrically operated control valves that are widely used in industry and everyday applications. They are used to control the flow of compressed air, water, gas, or other fluids. Solenoid valves are preferred due to their simple design and reliability. However, like all mechanical devices, solenoid valves can fail over time.

In this article, we will discuss some of the most common causes of solenoid valve failures. This information will help you ensure proper operation of your solenoid valves and assist in preventing potential malfunctions.

Dirt and Particle Contamination

One of the most common causes of solenoid valve failure is the presence of dirt and particulate contamination. Dirt or particles carried within the fluid can become lodged in the valve orifice or other moving components. This can obstruct fluid flow or prevent the valve from operating properly.

To prevent dirt and particle contamination, it is important to clean the systems in which your solenoid valves are installed on a regular basis. Additionally, make sure that the fluid is clean.

Coil Burnout

Another common cause of solenoid valve failure is coil burnout. The coil is the electrical actuator of the solenoid valve. Coil burnout can result from various factors such as overvoltage, overheating, or short circuits.

To prevent coil burnout, ensure that your solenoid valves are operated with the correct voltage and current ratings. Additionally, be aware of applications or operating conditions that may cause the valves to overheat.

Flow Rate and Pressure Issues

Solenoid valves are designed to operate within specific flow rate and pressure ranges. Deviations from these specified values can lead to valve malfunctions or failures.

To prevent flow rate and pressure issues, make sure that your solenoid valves are selected and installed according to the correct fluid flow rate and pressure specifications. Additionally, be aware of operating conditions that may cause overloading or overheating of the valves.

Improper Installation

Solenoid valves may fail if they are not installed correctly. For example, if the valve is not seated or secured properly, it can cause leakage or prevent the valve from operating correctly.

To avoid improper installation, carefully follow the installation instructions for your solenoid valves. Additionally, ensure that the valves are correctly aligned during installation.

Other Causes of Failure

Other factors that can cause solenoid valve failure include the following:

• Selecting the Wrong Type of Valve
• Lack of Proper Valve Maintenance
• Physical Damage to the Valve

Conclusion

If your solenoid valves are not operating properly, it is important to consult a specialist to identify the cause of the failure. Once the root cause has been determined, you can take the necessary steps to resolve the issue.