Standard [CURRENT]
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This document specifies requirements for sight flow indicators with circular sight glass plates intended to be installed in pipes with flanged ends, threaded ends, socket welding ends or butt welding ends and are used to monitor flow. The ranges of PN and Class comprise: - PN 16; PN 25; PN 40; Class 150; Class 300. The range of DN comprises: - DN 15; DN 20; DN 25; DN 32; DN 40; DN 50; DN 65; DN 80; DN 100.
This document replaces DIN 3236-1:1994-10 , DIN 3236-2:1996-02 , DIN 3237-1:1994-10 , DIN 3237-2:1994-10 , DIN 3237-3:1996-03 .