English to French Tech/Engineering Mechanics / Mech Engineering Flanged-ball valves in passage form with stuffing box

When inserting the ball valve (and the necessary seals) in an already mounted pipeline note that the interval

between pipeline ends are so measured that all flange connecting areas from the ball valve and seals remain

undamaged.

The interval is not allowed to be greater than necessary, so that when the flange link is tightened there will be no

tensions in the pipeline.