Tag
#flanges
2 topics across all disciplines.
Flanges and pressure classes — why Class 150 is not 150 psi
What a flange class means, how pressure–temperature ratings work, the common facing types, and why a gasket and bolt set are part of the rating.
Gaskets and bolting — why most flange leaks are assembly, not hardware
How a bolted joint actually seals, reading a spiral wound gasket by its colours, choosing stud and nut materials, and the bolt-up sequence that decides whether any of it works.