Can you solder a water pipe upside down?

I need to solder a valve in a copper water line but keep getting a drip of water which keeps me from being able to solder the joint. Any tips on how to solder when you are dealing with a slow drip that can't be stopped?

Hi, I have a water hammer (I'm guessing) problem in our house. All the pipes are under the house and it is a timber house so each time there is a water hammer noise it is extremely noisy. Basically any tap in the house is making the noise when turning on or off quickly with loud bangs. Cold...

I have a 1 1/4" drain on my bathroom sink. It goes into the wall and soldered on to a cast iron elbow. My chrome pipe is leaking and needs to be replaced. What alternatives do I have besides tearing the wall down to repipe?

At work we had to fix a buried 3" copper water line, what is the best way to do it brazing or solder ?

Hi there, I am concerned about a small leak (very small drip) at a solder joint of a hot water pipe. Should I have a plumber come and re-solder the joint or is there a produce I can purchase that will safely stop the leak. Thank you in advance for your assistance,