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IEC 60534-3-2 2nd Edition, April 1, 2001
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Industrial-Process Control Valves - Part 3-2: Dimensions - Face-to-Face Dimensions for Rotary Control Valves Except Butterfly Valves
Additional Comments: BILINGUAL * SAME AS BS 5793 P3 S3.2
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This part of IEC 60534 applies to the following control valves:

– types: segmented ball and eccentric rotary control valves with or without flanges;

– nominal sizes: DN20 up to and including DN400;

NOTE 1 See ISO 7005 and ISO 6708.

– designations: PN10, PN16, PN20, PN25, PN40, PN50, PN63, PN100 and PN110.

NOTE 2 See ISO 7005 and ISO 7268.

NOTE 3 Designations PN63 and PN100 are not included in ISO 7005.

NOTE 4 Designations PN20, PN50 and PN110 are not included in European Standard EN 1092.

NOTE 5 For the purposes of face-to-face dimensions, designation PN100 in EN 1092 corresponds to PN110.

NOTE 6 For the purposes of face-to-face dimensions, the following correlations apply:

– PN20 covers Classes 125 and 150 in the ANSI system;

– PN50 covers Classes 250 and 300 in the ANSI system;

– PN110 covers Class 600 in the ANSI system.

Only raised face flanges are covered.

Specifically excluded from this standard are all valves having welded or threaded end connections.