What are the symptoms of damaged solenoid valves

Electromagnetic valves are automated devices that can be used to control and adjust parameters such as the direction, flow rate, and speed of the medium. During long-term use, electromagnetic valves are inevitably damaged. What are the manifestations of electromagnetic valve damage?

The manifestations of electromagnetic valve damage generally include the following aspects:

1. The coil is burnt out
If the solenoid valve operates for a long time, the coil will inevitably burn out. If the solenoid valve does not produce oil after being plugged in, the coil will be abnormal. The internal core rod does not have suction, indicating that the coil is burnt out and the electromagnetic coil needs to be replaced.

2. Abnormal sound
Sometimes when the solenoid valve is energized, AC noise may occur because the coil nut is loose. At this point, the pilot valve should be cleaned to remove foreign objects, and then the nut should be tightened.

3. The solenoid valve is stuck
Usually, the clearance between the solenoid valve spool sleeve and valve core is very small, usually less than 0.008 millimeters. When impurities enter or there is too little lubricating oil, the solenoid valve is easily stuck.

4. Air leakage
Electromagnetic valves are prone to air leakage, which can cause insufficient air pressure and make it difficult for the forced valve to open or close.

5. The small hole of the pilot valve is blocked
When dirt in the pipeline blocks the pilot valve hole, it causes the pilot valve to fail to open. The solution is to first disassemble the valve body, clean the internal stains, and then reinstall it.