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Lesson 50/52Preview

Rupture Discs & Relief Devices

Learn how rupture discs and relief valves protect low-pressure chillers from over-pressurization, their differences, replacement requirements, and critical safety rules.

5m read

Rupture Disc Function

Rupture discs are installed on low-pressure chiller condensers to prevent catastrophic over-pressurization. During an emergency such as a fire, loss of cooling water, or air-cooled condenser failure, the heat causes refrigerant pressure to rise rapidly. Because low-pressure vessels are not designed for high pressures, the rupture disc bursts at a predetermined pressure to safely vent the refrigerant and prevent the vessel from exploding.

Rupture discs burst at a preset pressure to prevent vessel explosion during fires, loss of cooling water, or condenser failure.

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