DonadonSDD TCD rupture discs
| Model | TCD |
| Materials | Stainless steel |
| Membrane | PTFE, PFA |
| Dimensions | DN 2"(50) – DN 2"1/2(65) – DN 3"(80) |
| Rupture pressure | from 3 to 5 bar g |
| Tolerance | +/- 5 % |
| Operating temperature | up to 265 °C |
| 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 | Directly mounted |
| Rupture sensor | Elektryczne, Magnetyczne, Indukcyjne, Optical |
| PED Certification [CE STAMP] | Available |
| ATEX EX II 2 GD Certification | Available |
DonadonSDD TCD rupture discs are 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
This disc has been designed especially to be mounted on road or rail tankers containing liquids and gas in static, cycling and pulsating conditions.
TCD discs react to excessive pressure with total opening in a few milliseconds. They are therefore recommended for valve protection. Supports may be provided for vacuum or counter-pressure protection.