Metric Dimensions of Blind Flange Rating 900 as per ASME B16.5

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Blind Flange Dimensions

Blind Flange Dimensions

Metric Dimensions
150 300 400 600 900 1500 2500
Inch Dimensions
150 300 400 600 900 1500 2500

NPSOtf
1/212022.3
3/413025.4
115028.6
1-1/416028.6
1-1/218031.8
221538.1
2-1/224541.3
324038.1
429044.5
535050.8
638055.6
847063.5
1054569.9
1261079.4
1464085.8
NPSOtf
1670588.9
18785101.6
20855108
241040139.7

Templates for drilling of bolt holes

Flange Drilling Template

Flange Drilling Template

NPSBCDBHDBOLTSBD
1/282.67/843/4
3/488.97/843/4
1101.6147/8
1-1/4111.1147/8
1-1/2123.81-1/841
2165.1187/8
2-1/2190.51-1/881
3190.5187/8
4235.01-1/481-1/8
5279.41-3/881-1/4
6317.51-1/4121-1/8
8393.71-1/2121-3/8
10469.91-1/2161-3/8
12533.41-1/2201-3/8
14558.81-5/8201-1/2
NPSBCDBHDBOLTSBD
16616.01-3/4201-5/8
18685.82201-7/8
20749.32-1/8202
24901.72 5/8202-1/2

Flange Drilling Template

Flange Drilling Template

NPSSBL RFYSBL RJMBL RF
1/2110100110
3/4115110115
1125120125
1-1/4125120125
1-1/2140135140
2145140145
2-1/2160150160
3145140145
4170165170
5190185190
6190185195
8220215220
10235230235
12255250255
14275265280
NPSSBL RFYSBL RJMBL RF
16285280290
18325320335
20350345360
24440430455

Metric Dimensions
150 300 400 600 900 1500 2500
Inch Dimensions
150 300 400 600 900 1500 2500

General Notes

Dimensions are in millimeters, except for diameters of bolts and bolt holes, which are in inch units.

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