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View Full Version : Expansion tank on closed system


mark petty
11-07-2011, 06:32 AM
There is a pressure regular on the main supply line which I understand creates a closed system. Is an expansion tank always required?
Rick Cantrell
11-07-2011, 07:03 AM
There is a pressure regular on the main supply line which I understand creates a closed system. Is an expansion tank always required?

Yes,,