Flange - Weld Neck, ANSI Class 400, B16.5 (in)

Written by Matt Milbury. Posted in Weld Neck Flange Datasheets

Flange - Weld Neck, ANSI Class 400, ASME B16.5, 1/4" Raised Face (in)

his datasheet is for weld neck flanges that have a raised face connection.  Additional in depth information about these flanges can be found on the raised face page.

  • Dimensions to 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.

data wnf b16.5 400 2500data wnf b16.5

Pipe Size

(NPS)

Outside Diameter of Flange

A

Diameter of Raised Face

B

Thickness of Flange

C

Diameter of Bore

D

Diameter of Hub at Weld

H

Diameter of Hub at Base

J

Length of Hub

K

Number of Bolt Holes

 

Diameter of Bolt Holes

 

Bolt Circle Diameter

P

Approx. Weight

(lb)

1/2 3 3/4 1 3/8 9/16 * 0.840 1 1/2 2 1/16 4 5/8 2 5/8 3
3/4 4 5/8 1 11/16 5/8 * 1.050 1 7/8 2 1/4 4 3/4 3 1/4 4
1 4 7/8 2 11/16 * 1.315 2 1/8 2 7/16 4 3/4 3 1/2 5
1 1/4 5 1/4 2 1/2 13/16 * 1.660 2 1/2 2 5/8 4 3/4 3 7/8 7
1 1/2 6 1/8 2 7/8 7/8 * 1.900 2 3/4 2 3/4 4 7/8 4 1/2 10
2 6 1/2 3 5/8 1 * 2.375 3 5/16 2 7/8 8 3/4 5 12
2 1/2 7 1/2 4 1/8 1 1/8 * 2.875 3 15/16 3 1/8 8 7/8 5 7/8 18
3 8 1/4 5 1 1/4 * 3.500 4 5/8 3 1/4 8 7/8 6 5/8 23
3 1/2 9 5 1/2 1 3/8 * 4.00 5 1/4 3 3/8 8 1 7 1/4 26
4 10 6 3/16 1 3/8 * 4.500 5 3/4 3 1/2 8 1 7 7/8 35
5 11 7 5/16 1 1/2 * 5.563 7 4 8 1 9 1/4 43
6 12 1/2 8 1/2 1 5/8 * 6.625 8 1/8 4 1/16 12 1 10 5/8 57
8 15 10 5/8 1 7/8 * 8.625 10 1/4 4 5/8 12 1 1/8 13 89
10 17 1/2 12 3/4 2 1/8 * 10.750 12 5/8 4 7/8 16 1 1/4 15 1/4 126
12 20 1/2 15 2 1/4 * 12.750 14 3/4 5 3/8 16 1 3/8 17 3/4 177
14 23 16 1/4 2 3/8 * 14.00 16 3/4 5 7/8 20 1 3/8 20 1/4 233
16 25 1/2 18 1/2 2 1/2 * 16.00 19 6 20 1 1/2 22 1/2 294
18 28 21 2 5/8 * 18.00 21 6 1/2 24 1 1/2 24 3/4 360
20 30 1/2 23 2 3/4 * 20.00 23 1/8 6 5/8 24 1 5/8 27 445
22 33 25 1/4 2 7/8 * 22.00 25 1/4 6 3/4 24 1 3/4 29 1/4 465
24 36 27 1/4 3 * 24.00 27 5/8 6 7/8 24 1 7/8 32 640