In hydraulic systems, solenoid valve malfunctions are also relatively common. Today, let's analyze the reasons why solenoid valves fail to operate normally after being powered on. What exactly is the problem? Here are several fault causes and solutions summarized by the author. 

If the fluid pressure or working pressure difference is not in compliance, the solenoid valve will fail to operate normally and the medium cannot pass through. The possible reason is that the working conditions of the solenoid valve do not meet the actual working requirements and are beyond the working range of the actual working environment. 

Solution: Adjust the pressure or working pressure difference, or replace with a suitable product. 

2. The viscosity of the fluid or the temperature does not meet the requirements. This is usually due to the incorrect selection of the solenoid valve model or a change in the properties of the medium. 

Solution: Check the properties of the medium. If the medium properties can be adjusted, make the adjustment; otherwise, replace it with a suitable product. 

3. If dirt and impurities mix around the valve core and the moving iron core, and enter the interior of the solenoid valve product, it will cause the solenoid valve product to fail to work properly. 

Solution: Clean the interior and install a filter valve before the valve. 

4. The filter before the valve or the pilot valve hole is clogged, which is also caused by excessive impurities. 

Solution: Inspect the filter and pilot valve hole of the solenoid valve, and clean the filter or pilot valve hole. Additionally, check the medium of the solenoid valve. Excessive impurities should be cleaned up in a timely manner. 

5. If the working frequency is too high during use or the service life has expired, the excessively high working frequency will affect the normal operation of the solenoid valve. Additionally, if the solenoid valve has been in use for too long and its service life has expired, it will also fail to function properly. 

Solution: Select a different product model or replace with a new one. Additionally, COVNA Valves reminds everyone that incorrect operation, use, maintenance, and upkeep can all lead to the malfunction of solenoid valves and prevent them from working properly.