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.Pipe supports coming soon, then new gas line.
Kitchen sink is at the far corner of the room, so I've installed water hammer arrestors.
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