[Sander, Daniel]
I removed a 2.75" CF Flange Tee from a Holometer ion pump sub-system and cleaned tape residue from it. I then installed it on the North 6" to 2.75" zero length reducer flange (it is easily accessible from the side of the table). Sander and I cleaned and installed two 2.75" angle valves onto the tee, one on each side. The all metal angle valve is for the SRS RGA 100 (which I unboxed and inspected; it looks good) to reduce any contamination. The composite angle valve is for a leak checker. I tightened all 3 joints by hand unitl no copper was visible and there was a steel to steel connection all the way around.
I tested both valves today. The all metal angle valve requires a 1/2" square drive. It took ~30 Nm of torque to loosen it. I turned the valve a few turns and then turned it back. I also loosened and tightened the composite angle valve.
The all metal angle valve is from the power recycling cube. I covered that hole in UHV foil.