2025-09-12

Maintenance of Solenoid Valves – Common Problems and Solutions

Solenoid valves are often small, but they play a crucial role in many systems – from industrial processes to HVAC installations. When they work, you hardly notice them. But when they start malfunctioning, it can quickly turn into an operational issue. Fortunately, most problems can be prevented or resolved with simple measures. In this article, we’ll go through common problems with solenoid valves, what causes them, and how you can fix them yourself.


How to recognize when the valve isn’t working properly

Solenoid valves can suffer from a few common issues, but these are usually quite simple to address. One of the most frequent problems is when the valve does not open or close completely. This may be due to dirt in the valve seat, a damaged seal, or the coil not receiving enough voltage to properly activate the valve.

Another common issue is a buzzing noise or vibrations from the valve, often indicating voltage fluctuations or loose parts. If you notice leakage through the valve, it may be caused by worn seals, corrosion, or poor installation.

How to maintain them

To keep solenoid valves in good condition, it’s important to perform regular maintenance. Here are a few tips to prevent common problems:

  • Filter the medium – Make sure no particles enter the valve.
  • Check the coil – Prevent damage by keeping it away from excessive heat and moisture.
  • Clean the valve regularly – Especially if it handles dirty fluids.
  • Test the valve manually – If your valve has a manual override, use it to check functionality.
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When to replace the solenoid valve – and when only the parts need replacing

It can be difficult to know when a valve has reached the end of its lifespan. If the valve feels sluggish or doesn’t respond as it should, even after checking the voltage and cleaning it, it may be time for a replacement.

In many cases, you can extend the valve’s life by replacing certain parts, such as coils, seals, and springs. When the solenoid valve functions as a shut-off valve in a critical system, reliability is particularly important. In such cases, it may be more sensible to replace the entire valve rather than just individual parts, minimizing the risk of future operational issues.

If the valve still doesn’t work after replacing parts, or if it’s too costly to replace all components, it may be more cost-effective to replace the whole valve.

Keep your solenoid valves in top shape

To make troubleshooting easier in the future, it can be a good idea to label valves in larger systems. This way, you can quickly identify and resolve any faults. Keeping spare parts in stock, such as extra coils and seals, can also save both time and money during downtime.

Finally, make sure to document servicing and part replacements to keep track of when the valve was last maintained – this makes planning the next service much easier.

Simple tips for longer lifespan

Maintaining solenoid valves doesn’t have to be complicated. By staying aware of common problems, preventing dirt and damage, and knowing when it’s time to replace parts, you can keep your valves in good condition and avoid unexpected downtime.

Do you have questions about maintenance or need help choosing the right valve for your application? Don’t hesitate to contact us – we’ll be happy to assist!



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