Class 125 (standard) iron flanges are manufactured to American National Standard ASME B16.1 except as noted. Class 125 iron flanges are available in both black painted and galvanized.
FIG 1011 1011 CI Companion Flange
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1011 & 1018 Companion & Blind Flange Submittal
1016 Reducing Companion Flange Cast Iron
1018 Blind Flange Cast Iron