Currently I have a length of galvanized steel pipe (3/4") from the water meter, which is feeding the main trunk (3/4" copper). The water pressure in the house is very low, and I suspect it is due to restrictive buildup in the galvanized pipe.
I have enough 3/4 PEX left over from another project, but was wondering if I can replace the galvanized pipe with PEX (from a code compliance stand point)?
In most PEX systems that I've seen, the manifold is fed by copper. So I'm not sure if there are some codes that prevent PEX from being connected to the water main, or if there is some other reason this is done.
I would like to avoid buying copper pipe if I can, since I already have the PEX. I live in New York (the state, not the city).