@the-chiller-guys true. Do you Gus typically solder or braze copper relief piping? Is there an industry standard? Or is it up to manufacturer recommendations? I feel like the dry fitting would be about the same either way you go and biggest cost differences would be in materials. Soldering is pretty quick, brazing wouldn’t take too much longer than soldering but has higher inherent cost with torch gasses and filler materials. Progress is fast but those fittings ain’t cheap!