Vacuum Breaks / Electrical Isolators - New Large Vacuum Break

MDC Precision offers a complete line of vacuum breaks, also known as electrical isolators, for demanding ultra-high vacuum (UHV) applications and environments. Composed of metal adapters brazed to each end of an insulating ceramic tube that provides voltage isolation between the conductive metal ends, vacuum breaks provide an electrical break between the vacuum chamber and other external components as well as electrostatic discharge (ESD) protection of sensitive components in the vacuum system.


Constructed using high-purity alumina ceramic insulators hermetically bonded to low-expansion metal Kovar® sleeve adapters, the electrical breaks are attached to other vacuum components such as flanges, bellows, chambers and weldables using MDC’s proprietary UHV brazing techniques. All materials and braze alloys used are vacuum grade and chosen for their specific characteristics and ability to maintain the integrity of the seals for use in demanding applications and environments. A maximum thermal gradient of 25°C per minute must
be observed to preserve the life of the seal. Weldable vacuum breaks
are typically installed using one of the following fusing processes:
laser, electron-beam or TIG welding.

  • 14” (355.6mm) non-rotatable Del-Seal CF ConFlat® flange mounts
  • 11.75” (298.4mm) I.D. to maximize flow
  • Tapered ceramic-o-metal seal design geometry
  • UHV-compatible materials
  • Large capacity pass through
  • Enhanced seal joint integrity
  • Exceptional hermiticity and performance
  • High purity and reliability
  • 0.030” (0.8mm) flange-to-flange parallelism for secure connections, leak-free operation

Materials

  • Flanges               304SS (UNS S30400)
  • Adapters             Kovar (UNS K94610)
  • Insulators           92% min alumina ceramic

Vacuum Range
UHV 1 x 10-10 Torr 

Temperature Range
-100°C to 450°C

Thermal Gradient
25°C / minute maximum

Voltage
15,000 Volts DC (15k VDC)

Weight
35 lbs. | 15.9 kg

Optional

  • Custom configurations upon request
  • Bellows
  • Rotatable flange mount(s)
  • Non-magnetic, 316LN and titanium materials
  • Fusion Energy
  • Particle Accelerators
  • Research Equipment
  • UHV

Description

Kit Contents

Flange Type

Quantity/ Package

Flange Size

Part Number (SKU)

Install Kit

Copper Gaskets / Hexagonal Bolts

Del Seal CF ConFlat

1 EA

1.33” CF (DN16CF)

9912450

Install Kit

Copper Gaskets / Hexagonal Bolts

Del Seal CF ConFlat

1 EA

2.75” CF (DN40CF)

9912452

Install Kit

Copper Gaskets / Hexagonal Bolts

Del Seal CF ConFlat

1 EA

4.50” CF (DN63CF)

9912454

Install Kit

Copper Gaskets / Hexagonal Bolts

Del Seal CF ConFlat

1 EA

6.00” CF (DN100CF)

9912456

Install Kit

Copper Gaskets / Hexagonal Bolts

Del Seal CF ConFlat

1 EA

8.00” CF (DN160CF)

9912458

Install Kit

Copper Gaskets / Hexagonal Bolts

Del Seal CF ConFlat

1 EA

10.00” CF (DN200CF)

9912459

Install Kit

Copper Gaskets / Hexagonal Bolts

Del Seal CF ConFlat

1 EA

14.00” CF (DN295CF)

9912462

Shop All Electrical Breaks

Del-Seal CF ConFlat

 

VOLTS

NOMINAL TUBE I.D.

 

FLANGE SIZE

 

A

 

B

 

C

 

D

 

E

PART NUMBER (SKU)

10kV

0.75"

19.1mm

1.33” CF (DN16CF)

3.62”

91.9mm

0.75”

19.1mm

0.63”

16.0mm

1.00”

25.4mm

1.04”

26.4mm

9632000

3kV

1.50"

38.1mm

2.75” CF (DN40CF)

2.71”

68.8mm

1.25”

31.8mm

1.37”

34.8mm

0.25”

6.4mm

1.66”

42.2mm

9632001

15kV

1.50"

38.1mm

2.75” CF (DN40CF)

4.22”

107.2mm

1.25”

31.8mm

1.37”

34.8mm

2.00”

50.8mm

1.66”

42.2mm

9632002

8kV

2.50"

63.5mm

4.50” CF (DN63CF)

4.50”

114.3mm

2.50”

63.5mm

2.31”

58.7mm

0.75”

19.1mm

3.23”

82.0mm

9632003

8kV

4.00"

101.6mm

6.00” CF (DN100CF)

4.62”

117.3mm

3.50”

88.9mm

3.75”

95.3mm

0.75”

19.1mm

4.25”

108.0mm

9632004

15kV

6.00"

152.4mm

8.00” CF (DN160CF)

5.50”

139.7mm

6.00”

152.4mm

6.0”

152.4mm

1.50”

38.1mm

6.92”

175.8mm

9632005

15kV

8.00"

203.2mm

10.00” CF (DN200CF)

5.75”

146.1mm

7.75”

196.9mm

7.75”

196.9mm

1.50”

38.1mm

8.80”

223.5mm

9632006

15kV

11.75"

298.5mm

14.00” CF (DN295CF)

7.00”

177.8mm

11.75”

298.5mm

11.75”

298.5mm

1.50”

38.1mm

12.83”

325.9mm

9632011

 

Weldables

 

VOLTS

NOMINAL TUBE I.D.

 

A

 

B

 

C

 

D

 

E

 

F

Part Number (SKU)

10kV

0.75”

19.1mm

2.62”

66.5mm

0.75”

19.1mm

0.75”

19.1mm

1.00”

25.4mm

1.04”

26.4mm

0.035”

0.9mm

9631000

3kV

1.50”

38.1mm

2.30”

58.4mm

1.25”

31.8mm

1.50”

38.1mm

0.25”

6.4mm

1.66”

42.2mm

0.065”

1.7mm

9631001

15kV

1.50”

38.1mm

3.80”

96.5mm

1.25”

31.8mm

1.50”

38.1mm

2.00”

50.8mm

1.66”

42.2mm

0.065”

1.7mm

9631002

8kV

2.50"

63.5mm

3.63”

92.2mm

2.50”

63.5mm

2.37”

60.2mm

0.75”

19.1mm

3.23”

82.0mm

0.03”

0.8mm

9631003

8kV

4.00"

101.6mm

3.57”

90.7mm

3.50”

88.9mm

3.81”

96.8mm

0.75”

19.1mm

4.25”

108.0mm

0.03”

0.8mm

9631004

15kV

6.00"

152.4mm

4.50”

114.3mm

6.00”

152.4mm

6.08”

154.4mm

1.50”

38.1mm

6.92”

175.8mm

0.04”

1.0mm

9631005

15kV

8.00"

203.2mm

4.64”

117.9mm

7.75”

196.9mm

7.83”

198.9mm

1.50”

38.1mm

8.80”

223.5mm

0.04”

1.0mm

9631006

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