Metal discs : LPD – low pressure rupture disc

Donadon LPD rupture disc is a composite conventional disc formed by four parts :

- A slotted, perforated metal part.
- A seal membrane (usually in PTFE).
- A protection section.
- A calibration ring with blades to improve membrane opening.

Designed to protect processing and storage tanks, atmospheric vessels and silos against implosion or overpressure conditions.
LPD discs may be installed directly between flanges avoiding the requirement for holders with blades and can be offered to meet a broad range of non standard specifications and applications.
LPD discs can be provided with :

- Dual protection (vacuum / pressure).
- Vacuum / counter-pressure support.
- Burst detector, ATEX approved, giving immediate indication of burst occurrence.