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Flange - Blind, ANSI Class 400, B16.5, RF (in)

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Flange - Blind, ANSI Class 400, B16.5, RF (in)

  • This datasheet is for blind flanges that have a raised face connection.
  • Dimensions per ASME B16.5 - Pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch Standard
  • Bolt circle diameters are 1/8 inch larger than bolt diameter.
Pipe Size

(NPS)

Outside Diameter of Flange

A

Diameter of Raised Face

B

Thickness of Flange

C

Number of Bolt Holes

NBH

Diameter of Bolt Holes

DBH

Bolt Circle Diameter

P

Approx Weight

(lb)

AW

1/2 3 3/4 1 3/8 9/16 4 5/8 2 5/8 2
3/4 4 5/8 1 11/16 5/8 4 3/4 3 1/4 3
1 4 7/8 2 11/16 4 3/4 3 1/2 4
1 1/4 5 1/4 2 1/2 13/16 4 3/4 3 7/8 6
1 1/2 6 1/8 2 7/8 7/8 4 7/8 4 1/2 8
2 6 1/2 3 5/8 1 8 3/4 5 10
2 1/2 7 1/2 4 1/8 1 1/8 8 7/8 5 7/8 15
3 8 1/4 5 1 1/4 8 7/8 6 5/8 20
3 1/2 9 5 1/2 1 3/8 8 1 7 1/4 29
4 10 6 3/16 1 3/8 8 1 7 7/8 33
5 11 7 5/16 1 1/2 8 1 9 1/4 44
6 12 1/2 8 1/2 1 5/8 12 1 10 5/8 61
8 15 10 5/8 1 7/8 12 1 1/8 13 100
10 17 1/2 12 3/4 2 1/8 16 1 1/4 15 1/4 155
12 20 1/2 15 2 1/4 16 1 3/8 17 3/4 226
14 23 16 1/4 2 3/8 20 1 3/8 20 1/4 310
16 25 1/2 18 1/2 2 1/2 20 1 1/2 22 1/2 398
18 28 21 2 5/8 24 1 1/2 24 3/4 502
20 30 1/2 23 2 3/4 24 1 5/8 27 621
22 33 25 1/4 2 7/8 24 1 3/4 29 1/4 685
24 36 27 1/4 3 24 1 7/8 32 936

 

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