Our AllPro Preinsulated pipe system has been tested in Italy for oxygen permeation. Using our AllPro EF 90o Elbows we are able to construct a continuous test loop, as required by the testing standard. The interior piping of our AllPro piping system is manufactured using highly beta crystalline PP-RCRT, which has exceptionally low oxygen permeability. Low permeability is important when the piping serves as supply pipes for radiant heating headers to eliminate oxygen permeation through the overall system.
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