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PN40 Flange Tables

BS4504 PN40 Dimensions

Valves according to PN40 flange size.

Pn40 flanges


DN = Nominal size, D = Outside Diameter, A = Outside Dia of Neck , B1 = Bore of Type 101 & 112 Flange,
C1 = Thickness of Plate Flange,
C2 = Thickness of Weld_Neck and Boss Flange , N1 = Dia of Weld Neck ,
N2 = Dia of Boss, R = corner Radius,
H1 = Length of Boss Flange,
H2 = Length of Weld Neck Flange, H3 = Length of Neck :

Note: The flanges shown are only a small part of the range covered in BS 4504.

The Facings shown are type B (Raised Face).  Other Facings include:
Type A..Flat:  Type C..Tongue:   Type D..Groove   Type E..Spigot:  :Type F..Recess:   Type G..O-ring Recess:  Type H.,0-ring Groove:
Note : All Dimensions in mm
DNDC1C2H1H2H3RAN1N2B1d1f1
1090141622356317,2283018402
1595141622386321,3323522452
20105161826406426,9404527,5582
25115161828406433,7465234,5682
32140181830426542,4566043,5782
40150181832457548,3647049,5883
50165202034488560,3748461,51023
651852222385210676,19210477,51223
802002424405812688,911011890,51383
10023526244465126114,31341451161623
12527028264868126139,7162170141,51883
15030030285275128168,3190200170,52183
20037536345288168219,1244260221,52853
2504504238601051810273306312276,53453
3005154842671151810323,9362380327,54104
3505805446721252010355,6408424359,54654
4006606050781352010406,4462478411,05354
4506856650841352012457,0500522462,05604
5007557252901402012508,0562576513,56154
60089084601001502012610,0666686616,57355
DNDC1C2H1H2H3RAN1N2B1d1f1

Flange Bolting

K = Bolt Circle Diameter, L = Dia Of Bolt Hole,
No = Number of Holes , Size = Size of Bolts


DNKLNoSize
mmmmmm-mm
1060144M12
1565144M12
2075144M12
2585144M12
32100184M16
40110184M16
50125184M16
65145188M16
80160188M16
100190228M20
125220268M24
150250268M24
2003203012M27
2503853312M30
3004503316M30
3505103616M33
4005853916M36
4506103920M36
5006704220M39
6007954820M45
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