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) |
|
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 |
|
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 |
|
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 |
|
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 |
|
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 |
|
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 |
|
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 |
|
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 |
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 |
|
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 |
|
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 |
|
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 |
|
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 |
|
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 |
|
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 |