A. I generally see homes with older galvanized pipes that have less water pressure than homes with copper, PVC (polyvinyl chloride) or PEX (high density polyethylene) supply pipes.

If you're doing a plumbing installation or repair, you'll need to buy pipe and pipe fittings. Here's some help figuring out which fittings you need. The post A Guide To Pipe Fittings and How To Use ...