Carrier LFP Humidifier "counter gasket" Questions

...gasket that seals when compressed and allows water to flow. When the solenoid magnet activates it counters the spring and opens the path for water to flow. The spring corroded and broke. I need the ...

...gasket on the tank, and all looks good. Any ideas? I read you rite,t the humidifier won't supply enough water to wet the roller . If so then follow the fresh water line down to the shut off valve. ...