Originally Posted by WILDRTEXAS
Im in the process of replacing copper w/ all pex.
A few questions ... how do I set up for a pressure test? and does the hot water heater require 18" of copper befor the pex? Thank You!!
My "pressure test" was performed with city water.
I did, however, use one of those in-line regulators attached to the end of the hose before entering the trailer.
I ran the PEX right up to the water heater, no worries. In fact, the fittings I used on the water heater itself are PEX rather than metal fittings. They're made to withstand the hot water, and the outside of my water heater is cooler than the water running through the PEX, so it shouldn't be an issue.