Water shut off valve

[Dave2021]

I have a Watts regulator FBVS-3 ball shut off valve for the water going out to the sprinkler system and when I turn it off it is still letting some water go through. Can I replace anything or do I need to replace the regulator?
It is Watts FBVS 3. Thanks

 

[Twowaxhack]

Replace the valve.

See everyone, ballvalves leak too. Nothings perfect.