唐纳森SDD DCD型爆破片是一种复合式正拱型爆破片,由三个部分组成:
开槽穿孔金属层
密封膜片(通常采用PTFE,也可选用多种其他金属或非金属材料)
保护层
该型号特别适用于静态工况下的气体和液体介质,在低压领域表现卓越。DCD爆破片能在数毫秒内实现全开式响应,且完全无碎片产生,因此是阀门保护的理想之选。为应对真空或背压工况,可配备专用支撑件。
此外,复合式唐纳森SDD爆破片还能提供压力与真空的双重同步保护。
| 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 |

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