Description This 3/8" ID thermoplastic hose assembly is typically used on travel trailers to connect your regulator to the permanent gas piping system. The 3/8" MNPT threads into the regulator. The 1/2" female flare swivel attaches to your copper gas piping. MAX PRESSURE RATING - 350 PSI TEMPERATURE RANGE - -40ºF to 140º (-40ºC to 60ºC) CERTIFICATION - UL569 Used for LP & Natural Gas