Flange, Gasket, Dimensions, Mounting,ConFlat CF, DN

Flange and Gasket Dimensions

Dimensions



Schematic drawing CF flanges

Schematic drawing of the standard UHV mounting flange, ConFlat (CF) style


UHV Flange

Nominal outside diameter
O.D.

Flange thickness
d

Bolt circle
L

No. bolt
holes

Bolt hole
H

Knife edge
S

Seal recess
D

  [inch] [mm] [mm] [mm] [mm] [mm] [mm]
 DN10CF 1.0 25.0 6.0 17.50 6 3.3 10.50 13.50
 DN16CF 1.33 33.8 7.0 27.00 6 4.4 18.30 21.40
 DN25CF 2.12 54,0 11.5 41.30 4 6.8 27.70 33.00
 DN40CF 2.75 69.9 12.5 58.70 6 6.8 41.90 48.30
 DN50CF 3.38 85.7 16.0 72.40 8 8.4 55.90 61.80
 DN63CF 4.50 114.3 17.0 92.20 8 8.4 77.20 82.50
 DN75CF 4.62 117.4 17.5 102.30 10 8.4 85.20 91.60
 DN100CF 6.00 152.4 19.5 130.30 16 8.4 115.30 120.60
 DN125CF 6.75 171.5 21.0 151.60 18 8.4 136.30 141.80
 DN150CF / DN160CF *
8.00 203.2 21.0 181.00 20 8.4 166.10 171.40
 DN200CF 10.00 254.0 24.0 231.80 24 8.4 216.90 222.20
 DN250CF 12.00 304.8 24.0 284.00 32 8.4 267.50 273.10
 DN275CF 13.25 336.6 28.0 306.30 30 10.8 288.20 294.40
 DN300CF 14.5 368.3 28.0 338.10 32 10.8 320.00 326.40
 DN350CF 16.5 419.1 28.0 388.90 36 10.8 373.00 376.70
 DN400CF 18.5 469.9 28.0 437.90 40 10.8 419.00 424.40

* DN150CF and DN160CF are valid names for the same flange size

Data quoted from ISO/TS 3669-2:2007(E)



Schematic drawing Gaskets for CF flanges

Schematic drawing of the standard gasket
made of OFHC-Cu or silver-plated OFHC-Cu, suitable for UHV flanges


Gasket

Outside diameter
O.D.

Tolerance

Inside diameter
I.D.

Gasket thickness
d

  [mm] [mm] [mm] [mm]
 DN10CF 13.3 0 - 0.2 10.2 2
 DN16CF 21.3 16.2 2
 DN25CF 32.9 25.2 2
 DN40CF 48.2 39.2 2
 DN50CF 61.7 51.1 2
 DN63CF/L 82.4 63.5 2
 DN63CF 82.4 72.0 2
 DN75CF 91.5 76.4 2
 DN100CF 120.5 0 - 0.3 101.7 2
 DN125CF 141.7 127.3 2
 DN150CF / DN160CF *
171.3 152.5 2
 DN200CF 222.1 203.3 2
 DN250CF 272.9 0 - 0.5 245.0 2
 DN275CF 294.3 254.2 2
 DN300CF 326.2 302.0 2
 DN350CF 376.5 356.5 2
 DN400CF 423.9 405.0 2

* DN150CF and DN160CF are valid names for the same flange size

Data quoted from ISO/TS 3669-2:2007(E)
 
 
 

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