Flange Bolt Chart
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Flange
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NPS 20
Class 150
Dimensions for NPS 20 Class 150 generic flange
27.5
25
X
1.62
Field
Value
Notes
Outside Diameter of Flange (O)
27-1/2"
Note
Minimum Thickness of Flange (tf)
1-5/8"
Note
Diameter of Bolt Circle (W)
25"
Note
Flange dimensions in seconds.
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