Maximum service temperature up to 200 Degree F (93 Degree C) under pressure with occasional exposure to boiling water (212 Degree F, 100 Degree C);Design stress of CPVC is 2,000psi at 73 Degree F (23 Degree C);Xirtec piping materials requires less than half the energy needed to produce the equivalent size of carbon steel or steel alloy materials;Xirtec CPVC provides years of maintenance-free service. Our materials will not rust, pit, scale or corrode on either interior or exterior surfaces