Tightening piping joints connecting to rotating equipment


Before fixing the piping flanges on the machine flanges, planes have to be aligned in parallel as shown in the Figure 1.

The difference between the maximum and the minimum distance will be a “T” misalignment value, to be checked with the acceptance criteria sheet (see Figure 1). After each adjustment, please check and record the measurements until an acceptable alignment is reached.

Flange Alignment Acceptance Criteria

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