Solenoid valves（how to buy good solenoid valve）are very commonly used in automation and industrial area. But it will also have some problems like internal leaks or valves not closing properly. And normally these problems are simply caused by debris or sediment lodged inside the valve. For good maintenance of your solenoid valve, here are some tips for your reference.
• Remove the solenoid valve from the line once fluid and power have been isolated
• Remove the top coil firstly, and then remove the guide tube – inside the tube there is a loose plunger and spring.
• Check both tube and plunger for solid particles then clean with solvent and compressed air.
• For pilot-operated valves, remove the valve upper body screws and check the diaphragm for debris or damage.
• Clean all parts inside the valve.
• Once satisfied that the parts are not damaged and the inside is clean then reassemble the valve.
If sediment is a problem you may benefit from an in-line filter fitted up stream of the valve. However, if corrosion is present you may not have the correct valve type for your application. In extreme cases, both sediment and corrosion can cause the plunger to stick, drawing more current through the coil causing it to burn out. A regular process of maintenance will help to identify any problems in this respect and prolong the life of the solenoid valve（if you are interest, pls download our solenoid valve inquiry form）.