Noun
PEX (uncountable)
(organic chemistry) cross-linked high-density polyethylene
For instance, 1/2" PeX tubing is the same size as 1/2" copper tubing. 1/2" PVC on the other hand is not the same size as 1/2" tubing, and therefore requires either a threaded male or female adapter to connect them. Source: Internet
Pex Pex is nearly identical to Hex, except that it's played on a rhombus-shaped tiling of irregular pentagons, instead of regular hexagons. Source: Internet
He was followed soon after by Ralph Mor (who also worked on PEX) and Dave Sternlicht. Source: Internet
PeX and CPVC tubing also comes in rigid "joints" or flexible rolls. Source: Internet
Tapped into the existing copper with a sharkbite T, then PEX pipe for the new location. Source: Internet