KF Flanges and Fittings

KF Flanges and Fittings

Kaysuns offers a complete line of vacuum KF fittings and flanges. The tube portions are fabricated from 304 or 316L or other high quality stainless steels. kaysuns's elbows, and all tees and crosses are made with the pull port technique. This allows smooth, crevice-free butt welds to provide the maximum in cleanliness for UHV applications. Bakeout range is up to 200°C. Standard finish is bead blasted.

  • Flanges
  • Nipples
  • Elbows
  • Tees
  • Crosses
  • Clamps and Seals

kf

Flange
Size

Material

Tube
OD

Dimensions, in. (mm)

A

B

C

D

NW10

304/316L

1/2"

1.18" (30.0)

0.48" (12.2)

0.12" (3.0)

0.10" (2.5)

NW16

304/316L

3/4"

1.18" (30.0)

0.68" (17.2)

0.12" (3.0)

0.10" (2.5)

NW25

304/316L

1"

1.57" (40.0)

1.03" (26.2)

0.12" (3.0)

0.10" (2.5)

NW40

304/316L

1 1/2"

2.17" (55.0)

1.62" (41.2)

0.12" (3.0)

0.10" (2.5)

NW50

304/316L

2"

2.95" (75.0)

2.06" (52.3)

0.12" (3.0)

0.10" (2.5)

Features:

  • 1. Flanges are designed according to ISO2861 specification and can be changed upon request.
  • 2. Flange sizes are from NW10 to NW50
  • 3. Vacuum Range: ≥10-8 Torr
  • 4. Standard materials are 304 and 316L stainless steel.
  • 5. Tube sizes are from 1/2" to 2"
  • 6. The system can afford up to 400℉ (200 ℃). However, sustained baking above 302℉ (150°C) may result in deterioration of the O-ring.
  • 7. KF products are supplied with a machining finish. Other finishes are also available.
  • 8. Flanges and seals are reusable.
  • 9. No tools for assembly or disassembly.
  • 10. KF flanges are 100% tested before shipping.
  • 11. Seal Temperature Range:
    • Fluorocarbon FKM (Viton): -5 ℃ -204 ℃ (23℉ -399℉)
    • Silicon: -50℃ ~ 180℃ (-58℉〜356℉)
    • Buna-N (NBR): - 25℃ ~ 121℃ (-13℉ ~ 250℉)

Applications:

  • 1. High Vacuum
  • 2. Roughing line
  • 3. Vacuum systems, which require cleaning and modified frequently.
  • 4. Experimental system in research laboratories
 kf-part1

1.WING NUT
2.SPRING WASHER
3.EYE BOLT
4.WELD FLANGE
5.CLAMP
6.O-RING
7.CENTER RING

 kf-part2

1.SPRING WASHER
2.WING NUT
3.EYE BOLT
4.CLAMP
5.O-RING
6.CENTER RING
7.WELD FLANGE


Short Weld

kf-short-weld

Flange
Size

Tube
Size

Dimensions, in. (mm)

C

E

NW10

1/2"

0.50" (12.7)

0.37" (9.4)

NW16

3/4"

0.50" (12.7)

0.62" (15.7)

NW25

1"

0.50" (12.7)

0.87" (22.1)

NW40

1 1/2"

0.75" (19.1)

1.37" (34.8)

NW50

2"

0.75" (19.1)

1.87" (47.5)


Blank Flange

kf-blank-flange

Flange
Size

Tube
Size

Dimensions, in. (mm)

C

D

NW10

1/2"

0.20" (5.0)

1.18" (30.0)

NW16

3/4"

0.20" (5.0)

1.18" (30.0)

NW25

1"

0.20" (5.0)

1.57" (40.0)

NW40

1 1/2"

0.20" (5.0)

2.17" (55.0)

NW50

2"

0.20" (5.0)

2.95" (75.0)


Half Nipples

kf-half-nipples

Flange
Size

Tube
Size

Dimensions, in. (mm)

C

E

NW10

1/2"

1.25" (31.8)

0.37" (9.4)

NW16

3/4"

1.15" (29.2)

0.62" (15.7)

NW25

1"

2.03" (51.6)

0.87" (22.1)

NW40

1 1/2"

2.40" (61.0)

1.37" (34.8)

NW50

2"

3.15" (80.0)

1.87" (47.5)


Reducing

kf-reducing

Flange
Size

Tube
Size

C, in. (mm)

NW25×NW16

3/4"

1.30" (33.0)

NW40×NW16

3/4"

1.30" (33.0)

NW40×NW25

1"

2.18" (55.4)

NW50×NW16

3/4"

1.30" (33.0)

NW50×NW25

1 1/2"

2.18" (55.4)

NW50×NW40

2"

2.55" (64.8)


90° Elbow

kf-90-elbow

Flange
Size

Tube
Size

A, in. (mm)

NW10

1/2"

1.25" (31.8)

NW16

3/4"

1.15" (29.2)

NW25

1"

1.65" (41.9)

NW40

1 1/2"

2.40" (61.0)

NW50

2"

3.15" (80.0)


Equal Tee

kf-equal-tee

Flange
Size

Tube
Size

A, in. (mm)

NW10

1/2"

1.25" (31.8)

NW16

3/4"

1.15" (29.2)

NW25

1"

2.03" (51.6)

NW40

1 1/2"

2.40" (61.0)

NW50

2"

3.15" (80.0)


KF Clamp

kf-clamp

Flange
Size

Tube Size

Dimensions, in. (mm)

A

B

C

NW10/NW16

1/2" or 3/4"

1.69" (42.9)

2.47" (62.8)

0.63" (16.0)

NW25

1"

2.17" (55.1)

2.82" (71.6)

0.63" (16.0)

NW40

1 1/2"

2.76" (70.1)

3.54" (89.8)

0.63" (16.0)

NW50

2"

3.70" (94.0)

4.43" (112.5)

0.79" (20.1)

 


*For more information of kf fittings and flanges, please feel free to contact us.

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