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ANSI B 16.1 CLASS 125 Weldneck Flanges

Flange Size:

Flange Type:

Qty Needed:

Special Notes:

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ANSI B 16.1 CLASS 125 Weldneck Flanges Add Flanges

ANSI B16.1 125 Weldneck

* Bore (B2): To be specified by purchaser

Nominal Size Outside Diameter
(OD) 		Thickness
(T) 		Raised Face Dia.
(R) 		Diameter At Base
(X) 		* Bore
(B2) 		Diameter Bevel
(H) 		LTH
(L2) 		Drilling - Bolt Circle
(BC) 		Drilling - Hole Diameter Drilling - No. of Holes Weight
(lbs)
26 34.25 2 29.5 28.5 * 26 5 31.75 1.38 24 265
28 36.5 2.06 31.5 30.75 * 28 5.06 34 1.38 28 295
30 38.75 2.13 33.75 32.75 * 30 5.13 36 1.38 28 340
32 41.75 2.25 36 35 * 32 5.25 38.5 1.63 28 410
34 43.75 2.31 38 37 * 34 5.31 40.5 1.63 32 440
36 46 2.38 40.25 39.25 * 36 5.38 42.75 1.63 32 495
38 48.75 2.38 42.25 41.75 * 38 5.38 45.25 1.63 32 570
40 50.75 2.5 44.25 43.75 * 40 5.5 47.25 1.63 36 620
42 53 2.63 47 46 * 42 5.63 49.5 1.63 36 710
44 55.25 2.63 49 48 * 44 5.63 51.75 1.63 40 750
46 57.25 2.69 51 50 * 46 5.68 53.75 1.63 40 800
48 59.5 2.75 53.5 52.25 * 48 5.75 56 1.63 44 870
50 61.75 2.75 55.5 54.25 * 50 5.75 58.25 1.88 44 900
52 64 2.88 57.5 56.5 * 52 5.88 60.5 1.88 44 1000
54 66.25 3 59.75 58.75 * 54 6 62.75 1.88 44 1100
60 73 3.13 66 65.25 * 60 6.13 69.25 1.88 52 1350
66 80 3.38 - 71.5 * 66 6.38 76 1.88 52 1775
72 86.5 3.5 - 78.5 * 72 6.5 82.5 1.88 60 2100
84 99.75 3.88 - 90.5 * 84 6.88 95.5 2.13 64 2825
96 113.25 4.25 - 102.75 * 96 7.25 108.5 2.44 68 3800

Notes

Dimensions are in inches.
ANSI B16.1 is a gray iron pipe flange and fitting specification.
Steel flanges are occasionally produced to mate up with Class 125 and Class 250 valves
These flange dimensions are provided for reference even though specification does not cover steel.
These flanges are typically supplied with a flat face.