Nice explanation, never was a big fan of Roto locks. Typically, they are outside exposed to the weather and the you need to replace them entirely along with the compressor so you end up having to braze anyways. Your application here is ideal because the compressor is housed inside and the tight cabinet makes it nice to not have to weld. Also quite fortunate that the compressor suffered a mechanical failure rather than electrical
6:40 - I would expect you'd want to back wrench the other side of that joint to protect the piping on the exit side of the valve since the compressor (already toast) being replaced doesn't need its joint protected. Do you intend to repair this hermetic once you get it out?!
