Hi,

I recently tackled my own project of replacing a hot water heater with a
new one (electric). The heater used 3/4" copper pipe. I had no
problems except with a new water gate valve on the inlet side. I
replaced the old with an exact new one but now I have a leak that drips
one drop of water about every two minutes.

Question:

1. Should these gate valves be dissembled prior to soldering so the
heat won't affect the o-rings inside ? Mine is leaking at the solder
connection, not from the top or the valve stem, but I wouldn't want to
chance damaging the o-rings.

2. Should I try heating the fitting up again and apply more solder to
stop this very tiny leak or just cut it out and install another new one ?

3. I used the proper soldering techniques (cleaning, flux, dry pipes,
etc.) but any pointers will be appreciated. This fitting was the only
problem I had.

Thanks very much in advance.

Joey