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KF (QF) HV to Quick-Connect Couplings

Flange to quick connect coupling adapters allow the mating of one type of flange system to a quick connect coupling. All of our flange to fitting adapters are manufactured from 304 series stainless steel (unless otherwise noted).

Flange to Quick Connect Coupling Adapter Features:

Makes a vacuum joint with any smooth-surfaced standard O.D. tube
Commonly used to attach tubulated ion or thermocouple gauges to a system
Adapters available in either CF or KF flange terminations
Dual coupling versions ideal for easy fluid circulation

Notes:

Care should be taken not to chip, crack or over tighten the compression fitting on glass neck tubes.
We recommend using a high quality thread lubricant on all stainless steel threads (sold below).

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Ordering Table

(Click column headers to sort data)

Flange Size/OD

Drawing

Nominal Tube OD

Dim A

Dim B

Description

VacuCAD^SM

Part Number

Price

In Stock

Add To Cart

Flange Size/OD

Drawing

Nominal Tube OD

Dim A

Dim B

Description

VacuCAD^SM

Part Number

Price

In Stock

Add To Cart

KF10 (1.18" OD)

1/2

0.52

1.5

ADAPTER,SS,QF10 FLANGE TO 1/2" VACUUM COUPLING.

(please log in)

QF10XVC050

$109.50

KF16 (1.18" OD)

1/4

0.27

1.4

ADAPTER,SS,QF16 FLANGE TO 1/4" VACUUM COUPLING.

(please log in)

QF16XVC025

$115.25

KF16 (1.18" OD)

1/2

0.52

1.5

ADAPTER,SS,QF16 FLANGE TO 1/2" VACUUM COUPLING.

(please log in)

QF16XVC050

$131.20

KF16 (1.18" OD)

3/4

0.77

1.8

ADAPTER,SS,QF16 FLANGE TO 3/4" VACUUM COUPLING.

(please log in)

QF16XVC075

$120.00

KF25 (1.57" OD)

1/2

0.52

1.5

ADAPTER,SS,QF25 FLANGE TO 1/2" VACUUM COUPLING

(please log in)

QF25XVC050

$110.00

KF25 (1.57" OD)

5/8

0.64

1.7

ADAPTER,SS,QF25 FLANGE TO 5/8" VACUUM COUPLING

(please log in)

QF25XVC062

$115.00

KF25 (1.57" OD)

3/4

0.77

1.8

ADAPTER,SS,QF25 FLANGE TO 3/4" VACUUM COUPLING

(please log in)

QF25XVC075

$145.00

KF25 (1.57" OD)

1.02

ADAPTER,SS,QF25 FLANGE TO 1" VACUUM COUPLING.

(please log in)

QF25XVC100

$200.00

KF25 (1.57" OD)

1-1/8

1.14

ADAPTER,SS,QF25 FLANGE TO 1-1/8" VACUUM COUPLING.

(please log in)

QF25XVC112

$185.00

KF40 (2.16" OD)

1/2

0.52

1.5

ADAPTER,SS,QF40 FLANGE TO 1/2" VACUUM COUPLING

(please log in)

QF40XVC050

$125.00

KF40 (2.16" OD)

3/4

0.77

1.8

ADAPTER,SS,QF40 FLANGE TO 3/4" VACUUM COUPLING

(please log in)

QF40XVC075

$150.00

KF40 (2.16" OD)

1.02

ADAPTER,SS,QF40 FLANGE TO 1" VACUUM COUPLING

(please log in)

QF40XVC100

$175.00

KF40 (2.16" OD)

1-1/8

1.14

ADAPTER,SS,QF40 FLANGE TO 1-1/4" VACUUM COUPLING.

(please log in)

QF40XVC112

$197.50

KF40 (2.16" OD)

1-1/4

1.27

ADAPTER,SS,QF40 FLANGE TO 1-1/4" VACUUM COUPLING.

(please log in)

QF40XVC125

$245.50

KF40 (2.16" OD)

1-3/8

1.38

2.1

ADAPTER,SS,QF40 FLANGE TO 1-3/8" VACUUM COUPLING.

(please log in)

QF40XVC137

$270.50

KF40 (2.16" OD)

1-1/2

1.52

2.4

ADAPTER,SS,QF40 FLANGE TO 1-1/2" VACUUM COUPLING.

(please log in)

QF40XVC150

$286.50

KF50 (2.95" OD)

1/2

0.52

1.5

ADAPTER,SS,QF50 FLANGE TO 1/2" VACUUM COUPLING

(please log in)

QF50XVC050

$150.00

KF50 (2.95" OD)

3/4

0.77

1.8

ADAPTER,SS,QF50 FLANGE TO 3/4" VACUUM COUPLING

(please log in)

QF50XVC075

$160.00

KF50 (2.95" OD)

1.02

ADAPTER,SS,QF50 FLANGE TO 1" VACUUM COUPLING

(please log in)

QF50XVC100

$265.00

KF50 (2.95" OD)

1-1/8

1.14

ADAPTER,SS,QF50 FLANGE TO 1-1/8" VACUUM COUPLING

(please log in)

QF50XVC112

P.O.R.

KF50 (2.95" OD)

1-1/2

1.52

2.4

ADAPTER,SS,QF50 FLANGE TO 1-1/2" VACUUM COUPLING

(please log in)

QF50XVC150

$400.00

KF50 (2.95" OD)

2.02

2.4

ADAPTER,SS,QF50 FLANGE TO 2" VACUUM COUPLING

(please log in)

QF50XVC200

$308.00

Flange Size/OD

Drawing

Nominal Tube OD

Dim A

Dim B

Description

VacuCAD^SM

Part Number

Price

In Stock

Add To Cart

Flange Size/OD

Drawing

Nominal Tube OD

Dim A

Dim B

Description

VacuCAD^SM

Part Number

Price

In Stock

Add To Cart

KF10 (29.97 mm OD)

12.7

13.2

38.1

ADAPTER,SS,QF10 FLANGE TO 1/2" VACUUM COUPLING.

(please log in)

QF10XVC050

$109.50

KF16 (29.97 mm OD)

6.4

6.9

35.6

ADAPTER,SS,QF16 FLANGE TO 1/4" VACUUM COUPLING.

(please log in)

QF16XVC025

$115.25

KF16 (29.97 mm OD)

12.7

13.2

38.1

ADAPTER,SS,QF16 FLANGE TO 1/2" VACUUM COUPLING.

(please log in)

QF16XVC050

$131.20

KF16 (29.97 mm OD)

19.1

19.6

45.7

ADAPTER,SS,QF16 FLANGE TO 3/4" VACUUM COUPLING.

(please log in)

QF16XVC075

$120.00

KF25 (39.88 mm OD)

12.7

13.2

38.1

ADAPTER,SS,QF25 FLANGE TO 1/2" VACUUM COUPLING

(please log in)

QF25XVC050

$110.00

KF25 (39.88 mm OD)

16.26

43.2

ADAPTER,SS,QF25 FLANGE TO 5/8" VACUUM COUPLING

(please log in)

QF25XVC062

$115.00

KF25 (39.88 mm OD)

19.1

19.6

45.7

ADAPTER,SS,QF25 FLANGE TO 3/4" VACUUM COUPLING

(please log in)

QF25XVC075

$145.00

KF25 (39.88 mm OD)

25.4

25.9

50.8

ADAPTER,SS,QF25 FLANGE TO 1" VACUUM COUPLING.

(please log in)

QF25XVC100

$200.00

KF25 (39.88 mm OD)

28.7

50.8

ADAPTER,SS,QF25 FLANGE TO 1-1/8" VACUUM COUPLING.

(please log in)

QF25XVC112

$185.00

KF40 (54.86 mm OD)

12.7

13.2

38.1

ADAPTER,SS,QF40 FLANGE TO 1/2" VACUUM COUPLING

(please log in)

QF40XVC050

$125.00

KF40 (54.86 mm OD)

19.1

19.6

45.7

ADAPTER,SS,QF40 FLANGE TO 3/4" VACUUM COUPLING

(please log in)

QF40XVC075

$150.00

KF40 (54.86 mm OD)

25.4

25.9

50.8

ADAPTER,SS,QF40 FLANGE TO 1" VACUUM COUPLING

(please log in)

QF40XVC100

$175.00

KF40 (54.86 mm OD)

28.7

50.8

ADAPTER,SS,QF40 FLANGE TO 1-1/4" VACUUM COUPLING.

(please log in)

QF40XVC112

$197.50

KF40 (54.86 mm OD)

31.8

32.3

50.8

ADAPTER,SS,QF40 FLANGE TO 1-1/4" VACUUM COUPLING.

(please log in)

QF40XVC125

$245.50

KF40 (54.86 mm OD)

35.1

53.3

ADAPTER,SS,QF40 FLANGE TO 1-3/8" VACUUM COUPLING.

(please log in)

QF40XVC137

$270.50

KF40 (54.86 mm OD)

38.1

38.6

ADAPTER,SS,QF40 FLANGE TO 1-1/2" VACUUM COUPLING.

(please log in)

QF40XVC150

$286.50

KF50 (74.93 mm OD)

12.7

13.2

38.1

ADAPTER,SS,QF50 FLANGE TO 1/2" VACUUM COUPLING

(please log in)

QF50XVC050

$150.00

KF50 (74.93 mm OD)

19.1

19.6

45.7

ADAPTER,SS,QF50 FLANGE TO 3/4" VACUUM COUPLING

(please log in)

QF50XVC075

$160.00

KF50 (74.93 mm OD)

25.4

25.9

50.8

ADAPTER,SS,QF50 FLANGE TO 1" VACUUM COUPLING

(please log in)

QF50XVC100

$265.00

KF50 (74.93 mm OD)

28.7

50.8

ADAPTER,SS,QF50 FLANGE TO 1-1/8" VACUUM COUPLING

(please log in)

QF50XVC112

P.O.R.

KF50 (74.93 mm OD)

38.1

38.6

ADAPTER,SS,QF50 FLANGE TO 1-1/2" VACUUM COUPLING

(please log in)

QF50XVC150

$400.00

KF50 (74.93 mm OD)

50.8

51.3

ADAPTER,SS,QF50 FLANGE TO 2" VACUUM COUPLING

(please log in)

QF50XVC200

$308.00

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 +1 800 245 1656 or email salesus@lesker.com with your inquiry.

Accessories Table

Description

For

Per Package

VacuCAD^SM

Part Number

Price

In Stock

Add Item

Description

For

Per Package

VacuCAD^SM

Part Number

Price

In Stock

Add Item

Cast Clamps (SS)

KF10, KF16 Flanges

(please log in)

QF16-075-CS

$62.25

Cast Clamps (SS)

KF25 Flanges

(please log in)

QF25-100-CS

$68.85

Cast Clamps (SS)

KF40 Flanges

(please log in)

QF40-150-CS

$75.00

Cast Clamps (SS)

KF50 Flanges

(please log in)

QF50-200-CS

$90.00

Lever Clamps (Aluminum)

KF10, KF16 Flanges

N/A

QF16-075-CHA

$52.85

Lever Clamps (Aluminum)

KF25 Flanges

N/A

QF25-100-CHA

$75.00

Lever Clamps (Aluminum)

KF40 Flanges

N/A

QF40-150-CHA

$87.65