How to Install a Ball Valve? Soldering, or “sweating” fittings may be intimidating at first, but Ball Valve installation is easier than it sounds — and much cheaper than calling a plumber.Step 1: Determine a location Determine where you want to install the valve. If it’s a stop valve for a sink or vanity, you’ll just attach it to the end of the pipe. If you’re installing a … [Read more...] about Ball Valve Installation in 9 easy steps