DonadonSDD replaceable GA graphite rupture discs are mounted on a stainless steel ring that can be directly inserted between flanges.
This disc is very versatile because combines the mechanical robustness of a steel holder and the characteristics of graphite discs (resistant to aggressive fluids and low bursting pressure sensitivity to temperature variations).
Disc material is high purity graphite. Opening is total but with fragmentation. Vacuum support is required for rupture pressures below 1.7 barg. Discs are self-supporting at higher calibrations.
| Model | G-GA |
| Materials | Graphite and Stainless steel |
| Dimensions | DN 25 – DN 300 |
| Rupture pressure | 0.017 – 15 bar g (depending on diameter) |
| Tolerance | from +/- 10 % to +/- 20% |
| Operating temperature | from -60 °C to 300 °C |
| Operating margin | up to 75% |
| Vacuum support | Not Available |
| Fragmentation | Yes |
| Use under valve | No |
| Corrosion resistance | Very good - can be protected with a PTFE membrane |
| Linings | No |
| Container | Included, mounted between flanges |
| Seals | Available in graphite |
| Rupture sensor | Electrical |
| PED Certification [CE STAMP] | Available |
DonadonSDD GM monoblock graphite rupture discs are versatile and suitable for numerous applications and can be directly inserted between flanges.
Graphite rupture discs are very resistant to aggressive fluids and low bursting pressure sensitivity to temperature variations. Discs are made of very high purity graphite impregnated with phenolic resins in order to make the product impermeable.
Opening is total but with fragmentation.
Vacuum support is required for rupture pressures below 1.7 barg. Discs are self-supporting at higher calibrations.
| Model | G-GM |
| Materials | Graphite |
| Dimensions | DN 25 – DN 600 |
| Rupture pressure | 0.017 – 15 bar g (depending on diameter) |
| Tolerance | from +/- 10 % to +/- 20% |
| Operating temperature | from -60 °C to 180 °C |
| Operating margin | up to 75% |
| Vacuum support | Available |
| Fragmentation | Yes |
| Use under valve | No |
| Corrosion resistance | Very good - can be protected with a PTFE membrane |
| Linings | No |
| Container | Included, mounted between flanges |
| Seals | Available in graphite |
| Rupture sensor | Electrical |
| PED Certification [CE STAMP] | Available |
DonadonSDD replaceable GR graphite rupture discs are mounted on graphite (available for pressures up to 10 bar g) or metal (up to 15 bar g) holders. These discs are versatile and suitable for numerous applications.
Graphite rupture discs are very resistant to aggressive fluids and low bursting pressure sensitivity to temperature variations. Discs are made of very high purity graphite impregnated with phenolic resins in order to make the product impermeable.
Opening is total but with fragmentation.
Vacuum support is required for rupture pressures below 1.7 barg. Discs are self-supporting at higher calibrations.
| Model | G-GR |
| Materials | Graphite |
| Dimensions | DN 25 – DN 200 |
| Rupture pressure | 0.017 – 15 bar g (depending on diameter) |
| Tolerance | from +/- 10 % to +/- 20% |
| Operating temperature | from -60 °C to 180 °C |
| Operating margin | up to 75% |
| Vacuum support | Available |
| Fragmentation | Yes |
| Use under valve | No |
| Corrosion resistance | Very good - can be protected with a PTFE membrane |
| Linings | No |
| Container | GR, HI/A |
| Seals | Available in Graphite and Cork |
| Rupture sensor | Electrical |
| PED Certification [CE STAMP] | Available |
