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<strong>Flanges</strong> and fittings<br />
Section 1.2<br />
ISO KF <strong>Flanges</strong> and fittings<br />
DN25 KF<br />
HV Series<br />
Figure 1 Blank<br />
5<br />
2.5<br />
Figure 2 Unbored stub<br />
40<br />
26<br />
15º<br />
Seal surface<br />
outside groove<br />
ISO KF <strong>Flanges</strong> and fittings<br />
Features<br />
n<br />
HV rated to 1x10 -8 mbar<br />
n High-temperature rated to 200°C<br />
n<br />
n<br />
n<br />
n<br />
Symmetric, non-rotatable geometry<br />
Elastomer O-ring seal<br />
Clamp-style fastening<br />
ISO-compatible design<br />
Specifications<br />
Material<br />
<strong>Flanges</strong><br />
304ss<br />
O-rings<br />
Viton ® , Buna-N ® or silicone elastomer<br />
Clamps, hinged and bulkhead<br />
Aluminium<br />
Fastening<br />
Clamp type<br />
Hinged with metric thread<br />
Bulkhead type<br />
Hexagonal head bolts, M5 thread<br />
Nut type<br />
Hexagonal<br />
Torque<br />
Clamp: Finger tight<br />
Bolts: 9 to 14 Nm<br />
Vacuum range<br />
1x10 -8 mbar<br />
Temperature range Minimum Intermittent Sustained<br />
Viton ® -20°C 200°C 150°C<br />
Buna-N ® -20°C 100°C 80°C<br />
Silicone -20°C 200°C 150°C<br />
Weight<br />
0.1 kg maximum<br />
Dimensions<br />
39.9 OD x 22.2 ID maximum<br />
19 2.5<br />
25.4<br />
Figure 3 Weld flange – small tube<br />
Thro<br />
bore<br />
5<br />
5<br />
13<br />
2.5<br />
Figure 4 Weld flange<br />
2.5<br />
Tube<br />
size<br />
Thro<br />
bore<br />
Tube<br />
size<br />
Figure 5 Socket weld<br />
2.5 Thro<br />
bore<br />
Tube<br />
size<br />
30.5<br />
Dimensions in blue are common to all flanges<br />
1<br />
7.6<br />
Tube OD Flange Wt<br />
nominal Figure reference kg<br />
Stainless steel<br />
Blank 1 Blank 0.05<br />
Blank 2 Blank 0.05<br />
9.5 3 Weld 0.05<br />
12.7 3 Weld 0.04<br />
19.1 4 Weld 0.04<br />
25.4 4 Weld 0.04<br />
19.1 5 Socket weld 0.04<br />
Aluminium<br />
Blank 1 Blank 0.05<br />
Reference<br />
K25-B<br />
K25-US<br />
K25-10-W<br />
K25-12-W<br />
K25-19-W<br />
K25-W<br />
K25-SW<br />
K25-ALB<br />
Part<br />
number<br />
7712001<br />
7715001<br />
7713008<br />
7713009<br />
7713010<br />
7713011<br />
7713002<br />
1120152<br />
All dimensions are nominal in millimetres unless specified Weights given are approximate<br />
MDC Vacuum Limited Telephone +44 (0)207 192 8300 www.mdcvacuum.co.uk<br />
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