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Posted by HeatPro on May 17, 2005 at 11:59:37:
In Reply to: Put in another isolation valve? posted by Mike C on May 17, 2005 at 10:52:08:
Have him install the valve as you describe; it is worth the peace of mind to keep the system full while boiler, guages, controls, etc. are replaced. A ball valve with a bleed port to aid in fill to the valve location is helpful.