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Flanges & Components > KF (QF) Flanges & Components > KF (QF) Elbows

6-Way KF (QF) Crosses

We fabricate these KF (QF) crosses for HV systems from tubing and KF flanges. The KF (QF) flange is used for through- or foreline vacuum plumbing and for simple HV chamber ports.

KF Crosses Feature:

  • Available in 304L stainless steel or aluminum 6061-T6 (4-way standard crosses only)
  • Reducer crosses adapt two different flange sizes
  • Common lengths and tube diameters listed; contact us with your specific requirements

NOTE: These flanges are identical to the ISO NW flange standard. While these flanges are compatible with those made by European manufacturers, the tube diameter listed is in inches.

Dimensional Drawings

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Ordering Table

(Click column headers to sort data)

Flange
Size/OD
Type Dim
A
Weight
lbs
PartNo Price Add Item
VacuCADSM
Flange
Size/OD
Type Dim
A
Weight
lbs
PartNo Price Add Item
VacuCADSM
KF16 Stainless Steel 1.57 0.5
QF16-075-6X
$222.00
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KF25 Stainless Steel 1.97 1
QF25-100-6X
$263.00
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KF40 Stainless Steel 2.56 1
QF40-150-6X
$315.00
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KF50 Stainless Steel 2.76 2
QF50-200-6X
$424.00
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Flange Selection Guide
With a variety of flanges to choose from, the Flange Selection Guide is designed to help you find one to meet your vacuum requirements. Shop Now!
Can't find the flange you need or want a custom configuration? Please call us at 1-412-387-9200 or email international@lesker.com with your inquiry.

Accessories Table

Description For Per Package Weight lbs (kg) Manual PartNo Price Add Item
VacuCADSM
Description For Per Package Weight lbs (kg) Manual PartNo Price Add Item
VacuCADSM
Cast Clamps (Aluminum)
KF10, KF16 Flanges
1
1/2 (0.22)
--
QF16-075-C
P.O.R.
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Cast Clamps (SS)
KF10, KF16 Flanges
1
3/4 (0.34)
--
QF16-075-CS
$46.00
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Cast Clamps (Aluminum)
KF25 Flanges
1
1/2 (0.22)
--
QF25-100-C
P.O.R.
(please log in)
Cast Clamps (SS)
KF25 Flanges
1
1 (0.45)
--
QF25-100-CS
$57.00
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Cast Clamps (Aluminum)
KF40 Flanges
1
3/4 (0.34)
--
QF40-150-C
P.O.R.
(please log in)
Cast Clamps (SS)
KF40 Flanges
1
1-1/2 (0.68)
--
QF40-150-CS
$67.00
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Cast Clamps (Aluminum)
KF50 Flanges
1
3/4 (0.34)
--
QF50-200-C
P.O.R.
(please log in)
Cast Clamps (SS)
KF50 Flanges
1
2 (0.91)
--
QF50-200-CS
$79.00
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Lever Clamps (Aluminum)
KF10, KF16 Flanges
1
1/2 (0.22)
--
QF16-075-CHA
$33.00
N/A
Lever Clamps (Aluminum)
KF25 Flanges
1
3/4 (0.34)
--
QF25-100-CHA
$46.00
N/A
Lever Clamps (Aluminum)
KF40 Flanges
1
3/4 (0.34)
--
QF40-150-CHA
$54.00
N/A
Centering Ring (SS with Fluorocarbon O-Ring)
KF10 Flanges
1
1/4 (0.11)
--
QF10-050-SRV
$6.40
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Centering Ring (SS with Fluorocarbon O-Ring)
KF16 Flanges
1
1/4 (0.11)
--
QF16-075-SRV
$6.70
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Centering Ring (SS with Fluorocarbon O-Ring)
KF25 Flanges
1
1/4 (0.11)
--
QF25-100-SRV
$8.50
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Centering Ring (SS with Fluorocarbon O-Ring)
KF40 Flanges
1
1/4 (0.11)
--
QF40-150-SRV
$13.00
(please log in)
Centering Ring (SS with Fluorocarbon O-Ring)
KF50 Flanges
1
1/4 (0.11)
--
QF50-200-SRV
$15.00
(please log in)

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