Double rupture disc

Elfab has further developed its pressure-relief assembly range, adding a design to prevent environmental contamination in severe process conditions.

The Double-Disc Assembly comprises primary and secondary bursting discs that are both reverseacting, both forward-acting or now a combination of the two, plus a pressure gauge or switch to monitor the space between the discs.

Should a chemical attack cause pinholing of the primary disc, the secondary disc prevents pollution of the environment; the intermediate pressure sensor alerts staff to the need to replace the disc that has operated.