Mueller Line Gains UL OK for High-Pressure Refrigerants
Mueller Streamline Co. has been working with Underwriters Laboratories (UL) to conduct a series of performance tests regarding its copper tube and fittings and some of the newer higher pressure refrigerants.
As a result, Mueller Streamline Co. has announced that its Streamline® copper tube and fittings are UL recognized to 700-psi operating pressures. The announcement is in addition to the 2010 introduction of its Streamline line sets as UL recognized to 700 psi.