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 ...

When repairing a section of pipe in an existing run, don't try to cement (solvent-weld) all the new couplings. Most drain systems use rigid pipes fairly large in diameter. You can't flex them ...