Winterizing a hydraulic system

[irritation]

Originally Posted by Mike Leary

I'm suprised that they are still in "service".

They are quite dependable but adding zones is almost out of the question.

[Michdeere]

Thanks for the input fellas. I believe each of you are correct with your assessments. The system IS old, the landscape has changed, I have NO idea where all of the valves are (about half), and if it weren't for this electric/hydraulic manifold, I would be unable to expand the system. God help me if one of the missing valves decides to go T.U. I'll do what I can with it this Fall...