Breaks & Envelopes
Cryogenic Breaks , Liquid Breaks, Vacuum Breaks and Vacuum Envelopes
Specification Data
Cryogenic Breaks
Nominal Tube Diameter:
1/8 to 3/8 inches
Liquid Breaks
Nominal Tube Diameter:
1/4 to 1/2 inches
Vacuum Breaks
Nominal Tube Diameter:
3/4 to 3 inches
Vacuum Envelopes
Nominal Tube Diameter:
2-1/2 to 8 inches
Operating Conditions
The electrical and thermal ratings specified are safe operating limits determined by various factors including material properties, mechanical design, and the intended operating environment. All electrical ratings are based on operation with one side in dry atmosphere and the other side in vacuum of 1 x 10-4 Torr maximum pressure. Temperature ratings for various mounting options may reduce the operating range of an assembly. All assemblies have a maximum thermal gradient of 25ºC per minute and may be damaged if this limit is exceeded.
Breaks are electrical isolators made of tubular materials which are composed of metal adapters brazed to both ends of a ceramic insulator. Diameters of 2.5″ or less are referred to as breaks, while those over 2.5″ are referred to as envelopes.
Vacuum Breaks 3/4″ to 1 1/2″ to 60,000 Volts DC Weldable Flange
Vacuum Breaks 3/4″ to 1 1/2″ to 60,000 Volts DC Con-Flat Flange
Vacuum Breaks 3/4″ to 1 1/2″ to 60,000 Volts DC Quick Flange
Vacuum Envelopes 2 1/2″ to 8″ 20,000 Volts DC Weldable Flange
Vacuum Envelopes 2 1/2″ to 8″ 20,000 Volts DC Con-Flat Flange
Cryogenic Breaks with diameters 1/8″ and 1/4″ to 10,000 Volts Weldable Flange
Liquid or Water Breaks with diameters 1/4″ and 1/2″ to 5,000 Volts Weldable Flange
