Double disc
August 1st 2004

Elfab has designed a pressure-relief assembly to prevent environmental contamination in severe process conditions.

Double-Disc Opti-Gard comprises primary and secondary bursting discs, plus a pressure gauge or switch to monitor the space between the discs. In the event of a chemical attack causing a pinholing of the primary disc, the back-up prevents pollution of the environment, while the intermediate pressure sensor warns process managers and maintenance teams of the need to repair the primary disc.

The Opti-Gard disc comes with a 5% tolerance as standard. Wetted parts are manufactured from corrosion-resistant Hastelloy C267 and the assembly meets NACE MR0175.

As well as simplifying pipework considerations, the device negates the risk of separate holders being incorrectly installed.

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