低压爆破片
在微压环境下依然保持卓越可靠性的爆破解决方案
当需要保护储罐、料仓和储槽免遭内瘪或破裂风险时,超低压工况管理对爆破片提出了特殊要求:既需要具备与这类应用压力级别匹配的灵敏响应能力,又必须保持足够的结构强度避免自发坍塌。此类产品最典型的应用场景包括沼气生产用的发酵罐。
多纳登SDD提供全系列低压与超低压爆破片,不仅支持压力与真空双重防护,还可选配ATEX认证的爆破指示器,能在爆破瞬间触发可视信号。所有型号均实现零碎片设计,确保介质纯净度与系统安全性。
唐纳森SDD DIF型爆破片
DIF型爆破片采用复合式经典结构,由四个核心组件构成:
开槽穿孔金属承压层
密封膜片(常规采用PTFE,亦可选用多种金属/非金属材料)
抗冲击保护层
压力校准环
该产品专为法兰安装设计,在静态工况下对气体和液体介质表现出色,特别适用于低压保护领域。DIF爆破片能在毫秒级时间内实现过压全开,是阀门防护系统的理想选择。针对真空或背压工况,可配备专用支撑组件以增强系统安全性。
复合式唐纳森爆破片还可提供压力与真空同步双重保护功能。
Model | DIF |
Materials | Stainless steel, Alloy 201, Alloy 400, Alloy 600, Alloy 625, Alloy C276, Titanium |
Membrane | PTFE, PFA, Stainless steel, Aluminium |
Dimensions | DN 2”(15) – DN 40”(1000) |
Rupture pressure | 0.5 – 5 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 70% |
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 |
PED Certification [CE STAMP] | Available |
ATEX EX II 2 GD Certification | Available |
Model | LPD |
Materials | Stainless steel, Alloy 201, Alloy 400, Alloy 600, Alloy 625, Alloy C276, Titanium |
Membrane | PTFE, PFA |
Dimensions | DN 2″(50) – DN 20”(500) |
Rupture pressure | 5 – 500 millibar g (depending on material and diameter) |
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 |
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