Hoffman Instrumentation Supply - KF Centering Ring
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KF / ISO Series Vacuum Components
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KF Centering Ring
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The KF/ISO system of vacuum components is the family of specialty flanges, elbows, tees, crosses, bellows, etc. having interface dimensions defined by the International Standards Organization. The flanges are secured by a clamp acting on the outer flange surface. The ISO sequence goes to 20” (500mm). The maximum tubing size in the KF sequence is 2” (50mm) The letters KF often used in describing the system denote the “small” series. KF is derived from “Kleinflansch”, German for “small flange”.
The KF/ISO System in the USA
HIS presently supplies the ISO metric flanges with inch dimensioned stubs and sockets. HIS manufactures its KF/ISO products at its manufacturing facility in Hillsboro, Oregon.
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Item #
Series
Flange Size
A
Size
List Price
VC-KF-10CR
KF
1/2 Inch
12.700 mm
0.456 Inch
11.582 mm
0.50 Inch
12.70 mm
$5.00
VC-KF-16CR
KF
3/4 Inch
19.050 mm
0.625 Inch
15.875 mm
0.75 Inch
19.05 mm
$5.00
VC-KF-25CR
KF
1 Inch
25.400 mm
0.964 Inch
24.485 mm
1.00 Inch
25.40 mm
$6.00
VC-KF-40CR
KF
1 1/2 Inch
38.100 mm
1.560 Inch
39.624 mm
1.50 Inch
38.10 mm
$9.50
VC-KF-50CR
KF
2 Inch
50.800 mm
1.967 Inch
49.961 mm
2.00 Inch
50.80 mm
$12.75
Results 1 - 5 of 5
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