Replaced a metal plate with a very high quality window at the viewport on the pendulum valve between the SRM and OMM chambers.

The screws that fix the flange are of pozidriv as written here, so the drivers were prepared. Now I finish the work and I feel, I'm sure the screw heads would get stripped before they were even loosen without the pozidriv drivers...

No torque control here as the same manner as for the other pendulum valves or gate valves.