Originally Posted by ependydad
My fresh water tank drain already has the valve. It was my 2 low point drains that had caps.
If I want to add these ball valves, what tools do I need/how do I do it? (Mind you, I'm a computer guy with no real handy-man ability.)
Were they threaded caps?
If so, then look for some threaded ball valves (should be 1/2" NPT) and you will just thread them on in place of the caps.
You will need some teflon tape (thread seal) or paste and some channel lock pliers to hold the threads on the pipe coming out of the trailer and tighten it (the Valve) about as tight as you can get it by hand. (without turning red in the face)
Wrap the teflon tape in the direction of the threads, that is clockwise, or the paste is a bit eaiser to put on. Just a bit messy.
BTW If they are like Herks pic above, the 6 flat spots above the threads is where you hold it with the channel locks.