What is the expected performance of a PEX water distribution system?
PEX is designed and tested to perform as well or better than any other material approved for hot and cold-water distribution systems. PEX is anticipated to perform as long as copper, CPVC or any other approved plumbing material. What joining systems are available? There are several methods for joining PEX and they all involve the use of mechanical fittings. The two approved standard specifications for PEX connections are ASTM F 1960 and ASTM F 1807. The crimp fittings specified in ASTM F1807 are the most widely used. Other fitting systems, including compression fittings, are also available. PEX cannot be joined by solvent cement or heat fusion methods. What are the temperature limitations of PEX? PEX tubing can be used up to 200° Fahrenheit for heating applications. For plumbing, PEX is limited to 180°F. Temperature limitations can be found on the print line of the PEX tubing. PEX is tested to, and can be used with, standard T and P relief valves that operate at 210° F and 150 psi. How
