Uponor AquaPEX® white tubing is suitable for use in hydronic heating applications where the system contains no ferrous corrodible components or where any ferrous components are isolated from the tubing. Uponor AquaPEX® white tubing is manufactured and listed to ASTM F876 and F877 and CSA B137.5, certified to NSF Standards 14 and 61 and listed by the Hydrostatic Stress Board of PPI at 200 deg F at 80psi, 180 deg F at 100psi and 73.4 deg F at 160psi. Uponor AquaPEX® tubing (1/2", 3/4", 1" and 1-1/4" only) is also listed to UL 1821 and ULC/ORD C199P and carries an additional rating of 120 deg F at 130psi. Uponor AquaPEX® white tubing is marked with the PEX 5106 designation as required by the most recent edition of ASTM F876-15a, indicating it exceeds ASTM F876 chlorine-resistance requirements for continuous-recirculation systems operating up to 140 deg F while also affording a 30-day UV-resistance level.