Forum Archive: Posts by: wallpaper

Plumber reconfigure Hartford loop return lines & water feed due to incorrect piping.
Replaced master vent on rear riser with Gorton #2.
Installed a pressure control box.
When that did not help with the problem he came back and changed the HARTFORD loop into a Gifford loop with tee inches over the water line.
Flushed rear return line.
Nalt. Grid said it is a flaw in the return line, not a problem with the auto.feed.
Plumber states it is the auto.feed.
Any ideas of what’s causing this problem?
Thanks in advanced.