Finally, all copper pipes are connected. I had to make corrections to the first plumber's stub outs. His work was not code compliant (discovered prior to inspections, which will come after the gas pipes go in). Heights, spacing and anchoring were all wrong. That made for some interesting turns in the final pipework.
Also to my dismay, as I remember asking him, he doesn't deburr the inside of cut tubes, while I file mine down meticulously and noticed how restrictive it gets otherwise. It may not matter except for longevity of the copper pipes. Long term studies have shown that water turbulence from the restrictions adds unnecessary erosion.
It's about half of all the new fittings.
Oh well.
These are Webstone Isolator valves (above), sold as a set. They're designed for tankless water heaters with their upfeed direction and built-in ports for flushing and testing. The hot also has an extra port for a pressure relief valve, which connects horizontally and is always under pressure. It requires no less than 10 wraps of teflon tape or else it will leak -- I learned the hard way.
