Flat seat rupture disc LPD

stainless steellow-pressure system

DonadonSDD LPD model discs are a simple, reliable, accurate and economical solution for applications requiring extremely low pressure protection (positive or negative). Their primary use is to protect processing and storage tanks, atmospheric vessels and silos with low design pressures, and therefore only able to withstand slight pressures and vacuums, against implosion or rupture. A specially interesting application is in the protection of biogas digesters. DonadonSDD LPD rupture discs are flat composite discs formed by four parts: a slotted, perforated metal part a seal membrane (usually in PTFE but also available in many other metallic or non-metallic materials) a protection section a calibration ring with blades to improve membrane rupture DonadonSDD LPD discs open without fragmentation to prevent product contamination and can be customised to meet a broad range of non-standard specifications and applications. LPD discs can be designed: for dual pressure and vacuum protection to resist vacuum or counter-pressure conditions complete with a burst detector Tolerance - from +/- 5 % to +/- 20% Operating temperature - up to 265 °C Operating margin - up to 60% Vacuum support - Available Fragmentation - No (membrane only) Use under valve - Yes Corrosion resistance - Good - can be protected with a PTFE membrane Linings - Yes Container - Mounted between flanges Rupture sensor - Electrical, Magnetic, Inductive, Optical ATEX EX II 2 GD Certification - Available