Dec 27, 2008 #1 cdafd Specifier/Regulator Joined Aug 18, 2005 Messages 2,953 Location US For those that have been around for awhile: On a reqular anti freeze loop what is the purpose of the two valves on the vertical part of the loop?????
For those that have been around for awhile: On a reqular anti freeze loop what is the purpose of the two valves on the vertical part of the loop?????