How many times have you repaired a coupling (or know a technician who repaired a coupling) only to return in a short period of time to repair the same coupling again? Did you or that technician take the time to figure out why the coupling went out in the first place? Sometimes we do but most of the time we are in a hurry and want to get the system fixed and move on to another job. There is an inner desire in all of us to make the customer happy by restoring there hydronic system so comfort or temperature control can be realized once again. Going back to the basics can help us from making that return call to make another repair.