CDL pressure control valve and concentrate valve leeking

[jimsudz]

My new to me CDL 600 pressure control valve is leaking. is there a packing nut that can be tightened? Any tips or suggestions ? I cant see any nut on the front of macine machine . Thanks

[ennismaple]

We had one that leaked for years. We tried to tighten everything up but that didn't work so eventually we replaced the valve.