When this repair is done, a leaking copper makeup line feeding a cooling tower is sealed again and the building is protected from serious water damage. The whole job happened after hours, which makes the tidy result even more impressive in my eyes.
The maker isolated the run by closing adjacent inline ball valves and only pulled the faulty piping apart once those valves were confirmed to be holding. The replacement used two no-stop slip couplings and a 90-degree copper press elbow. Everything was dry-fitted, measured and marked before the permanent work, then the connections were secured with a cordless Milwaukee press tool. The line came back by slowly reopening the ball valves, and the finished joints were inspected and verified leak-free.
The surface prep is the detail that stands out to me: an abrasive sanding cloth plus a Ridgid inner and outer reaming tool. That matters because the failed elbow had unreamed, deformed edges on one side, simply never crimped in the first place. Cleaning up the tube properly before pressing looks like the right lesson learned from that failure.
One thing worth chewing over: a point raised in discussion was that older Viega fittings had tight tolerances and could stay watertight even when never pressed, hiding failures until damage showed up months or years later. Viega now uses wider tolerances so an unpressed connection reveals itself right away. This repair, with every joint pressed and checked, seems like the safer side of that history.
Project by Jumper man Tech. Watch it on their YouTube channel: