DonadonSDD DCD rupture discs

Model DCD
Materials Stainless steel, Alloy 201, Alloy 400, Alloy 600, Alloy 625, Alloy C276, Titanium
Membrane PTFE, PFA, Stainless steel, Aluminium
Dimensions DN ½”(15) – DN 40”(1000)
Rupture pressure 0.01 - 110 bar g (depending on material and diameter)
Tolerance from +/- 5 % to +/- 20%
Operating temperature membrane in PTFE/PFA max 265°C, up to 480°C (depending on the membrane)
Operating margin up to 80%
Vacuum support Available
Fragmentation No (membrane only)
Use under valve Yes
Corrosion resistance Good - can be protected with a PTFE membrane
Linings Yes
Container HI/A, HI/P, HI/F, HTC
Rupture sensor Electrical, Magnetic, Inductive, Optical
PED Certification [CE STAMP] Available
ATEX EX II 2 GD Certification Available

DonadonSDD DCD rupture discs are composite conventional discs formed by three 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

It is excellent for use with gas and liquids in static conditions and excellent for low pressures.
DCD discs react to excessive pressure with total opening in a few milliseconds without fragmentation. They are therefore recommended for valve protection. Supports may be provided for vacuum or counter-pressure protection.

Composite DonadonSDD rupture discs may also be used for simultaneous protection from pressure and vacuum.