Solenoid for Ro/Di

[toolmanbmw]

Thanks for all the help guys. Yeah we have princess auto. Which diodes would I need? Also this is directly on the RO side of things. I have it setup working with a float valve in my sump. This valve is suppose to turn on for 30 min a day to aid as a backup for the float valve.

It does almost sounds like the adapter is putting put power where it makes it turn on and off really quick... Maybe this diodes is the answer?