Pressure Relief for Ultrahigh (UHV) High In-Vacuum (HV)
Vacuum systems are engineered to operate under external (atmospheric) pressure loads, and not intended for internal pressurization. Accu-Glass Ultrahigh (UHV) and High In-Vacuum (HV) pressure relief products are important and preventative safety devices designed to protect vacuum systems against internal over-pressurization.
There are many scenarios in which rapid pressure buildup inside a vacuum vessel may occur — such as a runaway gas back-fill operation. Besides protecting delicate system instruments and equipment, such as vacuum viewports — UHV and HV Pressure Relief products minimize the risk of injury to system operators and other laboratory personnel.
The following chart is for the Burst Discs only. For the Variable Pressure Relief Feedthroughs, please click on that option below.
Burst Disc and Pressure Relief Feedthrough Specifications
High-Pressure Diaphragm Type
Low-Pressure Diaphragm Type
Adjustable Pressure Relief Valve Type
15 - 25 PSIG 7.5 - 11.5 PSIG 0.5 - 2.0 PSIG
Burst Disc and Pressure Relief Feedthrough Material Specifications
Adjustable PRV Type Body Housing
304 Stainless Steel 316 Stainless Steel
304 Stainless Steel 6061 Aluminum
Burst Disc and Pressure Relief Feedthrough Vacuum Range Specifications
UHV, Ultrahigh vacuum
HV, High vacuum
Adjustable PRV Type HV, High vacuum
1x10-10 Torr 1x10-8 Torr
Burst Disc and Pressure Relief Feedthrough Temperature Range Specifications
Burst Disc Diaphragm
Flange Mount, Conflat
Flange Mount, ISO
NPT Pipe Thread Fitting
Adjustable PRV Type PRV Main Seal, Viton®
150ºC 450ºC 150ºC 150ºC
* Overall assembly ratings must be adjusted to that of the lowest-rated component.