We're rebuilding a manifold and considering steel vs. copper or PEX. The steel would be free. Copper is far from free. We have CPVC and it's been very problematic with differential expansion / contraction. Any thoughts?
btuser said:I just finished a 6 zone header for both supply and return, including indirect with all new circulators ect.
I used black pipe. If I were to do it again I would have used copper. If you go with black pipe PLEASE PLEASE PLEASE don't use the cheap chinese fittings you will find at Home Depot and Lowes. Ward makes a superior product that will run straight, I tried to assemble a header using home depot tees and nipples and it was a disaster. I thoulght it was me untill I tried it again using Ward fittings per a sprinkler's fitter's advice. If you start at the boiler and work out it would be easier than the way I did it, which was to assemble the headers, then work backwards towards the boiler in an attemp to reduce downtime.