Accu-Glass Pressure Relief Valve, CF 2.75", Factory Set to 2.0 psi, Adjustable 0.50-2.0 psi
This pressure relief valve (PRV) from Accu-Glass is mounted on a CF 2.75" flange. Factory setting is at 2.0 psi, but with its precise pressure adjustment can be set as low as 0.50 psi. This PRV is suitable for High vacuum processes down to 1x10-8 Torr (leak tested to 5 x 10-10 standard cc/sec of He), and has a temperature rating up to 150° C.
Vacuum systems are only designed to operate under external (atmospheric) pressure. A Pressure Relief Valve offers a means of protecting vacuum vessels 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 instruments and equipment, a pressure relief valve also minimizes the risk of injury to system operators and other lab personnel.
