Solenoid valve cannot be closed

Solenoid valve cannot be closed
The seal of the main valve core or the actuator is damaged → replace the seal
Whether the fluid temperature and viscosity are too high → Replace the corresponding solenoid valve
If impurities enter the solenoid valve core or moving iron core → clean it
Spring life has expired or is deformed → replace
The orifice balance hole is clogged → clean it in time
The working frequency is too high or the lifespan has expired→Change the product or update the product