What are the total face-to-face dimensions according to DIN EN 558-1 / -2 for intermediate flange fittings?
The DIN EN 558-1 and DIN EN 558-2 define standardized face-to-face dimensions for intermediate flange fittings, including shut-off valves, control valves, and check valves. These standards specify the distances between the connection faces (e.g., flanges) to ensure the interchangeability and compatibility of the fittings within pipeline systems.
Excerpt from DIN EN 558-1 / -2 for flange fittings:
"Industrial valves - Total lengths of metal fittings for installation in pipelines with flanges - Fittings designated by PN and Class"; German version EN 558:2017
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