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

The Double-Disc
Assembly comprises
primary and secondary
bursting discs that are both
reverse-acting, both
forward-acting or a
combination of the two, plus
a pressure gauge or switch to
monitor the space between the discs.
In the event of chemical attack
causing pinholing of the primary
disc, the secondary disc prevents
pollution of the environment,
while the intermediate
pressure sensor alerts staff to
the need to replace the disc
that has operated.

The device is available in
various materials, from
stainless steel to Hastelloy
and Duplex.