Examples of EDTV sources are: 1  DVD players featuring DVI / HDMI outputs (with built-in HDTV scalars) 2  Video image processors (scalers) 3  Digital cable Set Top Boxes (STB) that offer EDTV service. 4  Digital satellite receivers that offer EDTV service (i.e.
All PEX pipe must meet the same. qualification requirements as specified in the PEX. Standards. Continuous use temperature ratings as high. as 200Â°F (93Â°C) are required as well as standardized. chlorine resistance testing to ensure that the piping will. withstand the most aggressive drinking water conditions.
Several different materials are available for use, one of which is PEX piping. Developed for use in Europe during the 1970s, PEX piping was first introduced to the United States in 1980. PEX stands for crosslinked polyethylene, meaning the tubing is resistant to the adverse effects of hot and cold temperatures. The crosslinking occurs through a chemical reaction between the polyethylene within the piping, the result of which is a flexible, resistant tubing.