If piping is important, there can be no installation without a plumbing connection. There are many because if some are mixed and can fit on different types of pipe most have each their own pipes. With or without welding, it is necessary to install them in the rules of the art for a perfect waterproofness. In general, the plumbing fitting used depends on the type of pipe. … [Read more...] about How many types of plumbing connections are there?