Need some help or advise. I am in no way a plumber,never really did any plumbing work,but I will try anything once. I had to replace the outlet ball valve on my Febco 765-1 backflow preventer. I went to Home Depot and bought the new 1" ball valve. To take the old one off I had to screw it all the way to one side to get it off the other,then screw it back the other way to get it completely off. I noticed when taking the old one off that is was soldered on one side of the valve. When I replaced th...
