Flange - Weld Neck, ANSI Class 2500, B16.5 (in)

Written by Matt Milbury. Posted in Weld Neck Flange Datasheets

Flange - Weld Neck, ANSI Class 2500, ASME B16.5, 1/4" Raised Face (in)

This 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 5 1/4 1 3/8 1 3/16 * 0.840 1 11/16 2 7/8 4 7/8 3 1/2 8
3/4 5 1/2 1 11/16 1 1/4 * 1.050 2 3 1/8 4 7/8 3 3/4 9
1 6 1/4 2 1 3/8 * 1.315 2 1/4 3 1/2 4 1 4 1/4 13
1 1/4 7 1/4 2 1/2 1 1/2 * 1.660 2 7/8 3 3/4 4 1 1/8 5 1/8 20
1 1/2 8 2 7/8 1 3/4 * 1.900 3 1/8 4 3/8 4 1 1/4 5 3/4 28
2 9 1/4 3 5/8 2 * 2.375 3 3/4 5 8 1 1/8 6 3/4 42
2 1/2 10 1/2 4 1/8 2 1/4 * 2.900 4 1/2 5 5/8 8 1 1/4 7 3/4 52
3 12 5 2 5/8 * 3.500 5 1/4 6 5/8 8 1 3/8 9 94
3 1/2 - - - - - - - - - - -
4 14 6 3/16 3 * 4.500 6 1/2 7 1/2 8 1 5/8 10 3/4 146
5 16 1/2 7 5/16 3 5/8 * 5.563 8 9 8 1 7/8 12 3/4 244
6 19 8 1/2 4 1/4 * 6.625 9 1/4 10 3/4 8 2 1/8 14 1/2 378
8 21 3/4 10 5/8 5 * 8.625 12 12 1/2 12 2 1/8 17 1/4 576
10 26 1/2 12 3/4 6 1/2 * 10.750 14 3/4 16 1/2 12 2 5/8 21 1/4 1068
12 30 15 7 1/4 * 12.750 17 3/8 18 1/4 12 2 7/8 24 3/8 1608
  • * To be specified by purchaser.