Industry valves - Face-to-face and centre-to-face dimensions of metal valves for use in flanged pipe systems - PN and Class designated valves - updated standard issued
BS EN 558:2017
What is it?:
This European Standard specifies the “face-to-face” (FTF) and “centre-to-face” (CTF) dimensions for PN and Class designated metal valves used in flanged pipe systems.
Why Is it Important?:
The main changes to the previous edition are as follows:
• PN500 has been deleted from the scope
• Figure 4 has been updated
• 4.2.4 for raised face flanges has been simplified and Figure 6 has been deleted
• DN 1050 has been added in the scope, Table 2 and Table B.1
• Basic series 111 to 124 have been added in Table 2 and in Table A.1
• FTF series 117 to 121, Class 250 and Class 600 have been added in Table 12
• FTF series 111 to 112 have been added in Table 13
• A new Table 16 was added for steam traps.
Published: 16th November 2017
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