The Uponer 34AQUAPEX Aquapex is a 3/4" Pipe. The Uponer Family of Companies is a leading supplier of materials for residential and commercial construction as well as industrial use. AquaPEX white tubing is used for potable water distribution, residential fire safety, and radiant heating and cooling and hydronic piping systems containing no ferrous corrodible components or where ferrous components are isolated from the piping. This part is a genuine Uponer product.