BS4505 Slip-on Plate Flange


All Dimensions in Millimetres

Larger Sizes Available For BS4504 Flanges

PN6 Bar Nominal Pressure (6/3)
NB Size
Inch. MM A B C D G H J No. holes
1/2" 15 80.00 55.00 40.00 22.40 12.00 2.00 11.00 4
3/4" 20 90.00 65.00 50.00 27.50 14.00 2.00 11.00 4
1" 25 100.00 75.00 60.00 34.50 14.00 2.00 11.00 4
1-1/4" 32 120.00 90.00 70.00 43.50 14.00 2.00 14.00 4
1-1/2" 40 130.00 100.00 80.00 49.50 14.00 3.00 14.00 4
2" 50 140.00 110.00 90.00 61.50 14.00 3.00 14.00 4
2-1/2" 65 160.00 130.00 110.00 77.50 14.00 3.00 14.00 4
3" 80 190.00 150.00 128.00 90.50 16.00 3.00 18.00 4
4" 100 210.00 170.00 148.00 116.00 16.00 3.00 18.00 4
PN10 Bar Nominal Pressure (10/3) & PN16 Bar Nominal Pressure (16/3)
NB Size
Inch. MM A B C D G H J No. holes
1/2" 15 95.00 65.00 45.00 22.40 14.00 2.00 14.00 4
3/4" 20 105.00 75.00 58.00 27.50 16.00 2.00 14.00 4
1" 25 115.00 85.00 68.00 34.50 16.00 2.00 14.00 4
1-1/4" 32 140.00 100.00 78.00 43.50 16.00 2.00 18.00 4
1-1/2" 40 150.00 110.00 88.00 49.50 16.00 3.00 18.00 4
2" 50 165.00 125.00 102.00 61.50 18.00 3.00 18.00 4
2-1/2" 65 185.00 145.00 122.00 77.50 18.00 3.00 18.00 4
3" 80 200.00 160.00 138.00 90.50 20.00 3.00 18.00 8
4" 100 220.00 180.00 158.00 116.00 20.00 3.00 18.00 8
PN25 Bar Nominal Pressure (25/5) & PN40 Bar Nominal Pressure (40/5)
NB Size
Inch. MM A B C D G H J No. holes
1/2" 15 95.00 65.00 45.00 22.40 16.00 2.00 14.00 4
3/4" 20 105.00 75.00 58.00 27.50 18.00 2.00 14.00 4
1" 25 115.00 85.00 68.00 34.50 18.00 2.00 14.00 4
1-1/4" 32 140.00 100.00 78.00 43.50 18.00 2.00 18.00 4
1-1/2" 40 150.00 110.00 88.00 49.50 18.00 3.00 18.00 4
2" 50 165.00 125.00 102.00 61.50 20.00 3.00 18.00 4
2-1/2" 65 185.00 145.00 122.00 77.50 22.00 3.00 18.00 8
3" 80 200.00 160.00 138.00 90.50 24.00 3.00 18.00 8
4" 100 235.00 190.00 162.00 116.00 24.00 3.00 22.00 8

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