Inch Dimensions of Blind Flange Rating 300 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
1/23.750.50
3/44.620.56
14.880.62
1-1/45.250.69
1-1/26.120.75
26.500.81
2-1/27.500.94
38.251.06
3-1/29.001.12
410.001.19
511.001.31
612.5O1.38
815.001.56
1017.501.81
1220.501.94
NPSOtf
1423.002.06
1625.502.19
1828.002.31
2030.502.44
2436.002.69

Templates for drilling of bolt holes

Flange Drilling Template

Flange Drilling Template

NPSBCDBHDBOLTSBD
1/22.625/841/2
3/43.253/445/8
13.503/445/8
1-1/43.883/445/8
1-1/24.507/843/4
25.003/485/8
2-1/25.887/883/4
36.627/883/4
3-1/27.257/883/4
47.887/883/4
59.257/883/4
610.627/8123/4
813.001127/8
1015.251-1/8161
1217.751-1/4161-1/8
NPSBCDBHDBOLTSBD
1420.251-1/4201-1/8
1622.501-3/8201-1/4
1824.751-3/8241-1/4
2027.001-3/8241-1/4
2432.001-5/8241-1/2

Flange Drilling Template

Flange Drilling Template

NPSSBL RFYSBL RJMBL RF
1/22.503.002.25
3/43.003.502.50
13.003.502.50
1-1/43.253.752.75
1-1/23.504.003.00
23.504.003.00
2-1/24.004.503.25
34.254.753.50
3-1/24.255.003.75
44.505.003.75
54.755.254.25
64.755.504.25
85.506.004.75
106.256.755.50
126.757.255.75
NPSSBL RFYSBL RJMBL RF
147.007.506.25
167.508.006.50
187.758.256.75
208.008.757.25
249.0010.008.00

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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