What cross-linking method is used to make Vanex PEX?
Vanguard uses the silane method of chemical cross-linking. This process uses HDPE resin with additives that react when the extruded pipe is exposed to heat and moisture. The chemical reaction stops when cross-linking reaches 70-80%. Even with further exposure, no additional reaction will take place. Vanex PEX is tested to check the degree of cross-link before it leaves the factory.
