Inch Dimensions of Blind Flange Rating 1500 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
1/24.750.88
3/45.121.00
15.881.12
1-1/46.251.12
1-1/27.001.25
28.501.50
2-1/29.621.62
310.501.88
412.252.12
514.752.88
615.503.25
819.003.62
1023.004.25
1226.504.88
1429.505.25
NPSOtf
1632.505.75
1836.006.38
2038.757.00
2446.008.00

Templates for drilling of bolt holes

Flange Drilling Template

Flange Drilling Template

NPSBCDBHDBOLTSBD
1/23.257/843/4
3/43.507/843/4
14.00147/8
1-1/44.38147/8
1-1/24.881-1/841
26.50187/8
2-1/27.501-1/881
38.001-1/481-1/8
49.50181-1/4
511.501-3/881-1/2
612.501-1/2121-3/8
815.501-3/4121-3/8
1019.002121-7/8
1222.502-1/8162
1425.002-3/8162-1/4
NPSBCDBHDBOLTSBD
1627.752-5/8162-1/2
1830.502-7/8162-3/4
2032.753-1/8163
2439.003-5/8163-1/2

Flange Drilling Template

Flange Drilling Template

NPSSBL RFYSBL RJMBL RF
1/24.254.004.25
3/44.504.254.50
15.004.755.00
1-1/45.004.755.00
1-1/25.505.255.50
25.755.505.75
2-1/26.256.006.25
37.006.757.00
47.757.507.75
59.759.509.75
610.2510.0010.50
811.5011.2512.75
1013.2513.0013.50
1214.7514.5015.25
1416.0015.7516.75
NPSSBL RFYSBL RJMBL RF
1617.5017.2518.50
1819.5019.2520.75
2021.2521.0022.25
2424.2524.0025.50

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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